Home / 142,992,724.70-197,324,149.05-81,111,734.66

Finding the Fourth Proportional to 142,992,724.70, 197,324,149.05 and 81,111,734.66

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Solution

The fourth proportional to 142,992,724.70, 197,324,149.05 and 81,111,734.66 is: 111,930,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,724.70 : 197,324,149.05 = 81,111,734.66 : x
  2. Step 2: Convert to fraction form
    142,992,724.70/197,324,149.05 = 81,111,734.66/x
  3. Step 3: Cross multiply
    142,992,724.70x = 197,324,149.05 × 81,111,734.66
  4. Step 4: Simplify right side
    142,992,724.70x = 16,005,304,018,767,272
  5. Step 5: Solve for x
    x = 16,005,304,018,767,272/142,992,724.70
  6. Step 6: Final answer
    x = 111,930,897.55

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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.