Home / 138,979,595.12-191,795,371-76,255,676.48

Finding the Fourth Proportional to 138,979,595.12, 191,795,371 and 76,255,676.48

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Solution

The fourth proportional to 138,979,595.12, 191,795,371 and 76,255,676.48 is: 105,234,770.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,979,595.12 : 191,795,371 = 76,255,676.48 : x
  2. Step 2: Convert to fraction form
    138,979,595.12/191,795,371 = 76,255,676.48/x
  3. Step 3: Cross multiply
    138,979,595.12x = 191,795,371 × 76,255,676.48
  4. Step 4: Simplify right side
    138,979,595.12x = 14,625,485,761,337,574
  5. Step 5: Solve for x
    x = 14,625,485,761,337,574/138,979,595.12
  6. Step 6: Final answer
    x = 105,234,770.25

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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.