Home / 138,555,340.83-191,206,876.88-74,975,680.30

Finding the Fourth Proportional to 138,555,340.83, 191,206,876.88 and 74,975,680.30

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Solution

The fourth proportional to 138,555,340.83, 191,206,876.88 and 74,975,680.30 is: 103,466,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,555,340.83 : 191,206,876.88 = 74,975,680.30 : x
  2. Step 2: Convert to fraction form
    138,555,340.83/191,206,876.88 = 74,975,680.30/x
  3. Step 3: Cross multiply
    138,555,340.83x = 191,206,876.88 × 74,975,680.30
  4. Step 4: Simplify right side
    138,555,340.83x = 14,335,865,671,762,912
  5. Step 5: Solve for x
    x = 14,335,865,671,762,912/138,555,340.83
  6. Step 6: Final answer
    x = 103,466,712.91

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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.