Home / 138,662,872.54-191,352,411.48-76,781,882.50

Finding the Fourth Proportional to 138,662,872.54, 191,352,411.48 and 76,781,882.50

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Solution

The fourth proportional to 138,662,872.54, 191,352,411.48 and 76,781,882.50 is: 105,957,695.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,662,872.54 : 191,352,411.48 = 76,781,882.50 : x
  2. Step 2: Convert to fraction form
    138,662,872.54/191,352,411.48 = 76,781,882.50/x
  3. Step 3: Cross multiply
    138,662,872.54x = 191,352,411.48 × 76,781,882.50
  4. Step 4: Simplify right side
    138,662,872.54x = 14,692,398,374,349,010
  5. Step 5: Solve for x
    x = 14,692,398,374,349,010/138,662,872.54
  6. Step 6: Final answer
    x = 105,957,695.13

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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.