Home / 142,747,906,624.20-197,006,560,036.20-81,788,359,768.92

Finding the Fourth Proportional to 142,747,906,624.20, 197,006,560,036.20 and 81,788,359,768.92

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Solution

The fourth proportional to 142,747,906,624.20, 197,006,560,036.20 and 81,788,359,768.92 is: 112,876,215,071.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,747,906,624.20 : 197,006,560,036.20 = 81,788,359,768.92 : x
  2. Step 2: Convert to fraction form
    142,747,906,624.20/197,006,560,036.20 = 81,788,359,768.92/x
  3. Step 3: Cross multiply
    142,747,906,624.20x = 197,006,560,036.20 × 81,788,359,768.92
  4. Step 4: Simplify right side
    142,747,906,624.20x = 16,112,843,409,078,062,415,872
  5. Step 5: Solve for x
    x = 16,112,843,409,078,062,415,872/142,747,906,624.20
  6. Step 6: Final answer
    x = 112,876,215,071.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.