Home / 131,127,421.39-180,951,101.49-72,388,827.78

Finding the Fourth Proportional to 131,127,421.39, 180,951,101.49 and 72,388,827.78

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Solution

The fourth proportional to 131,127,421.39, 180,951,101.49 and 72,388,827.78 is: 99,893,965.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,127,421.39 : 180,951,101.49 = 72,388,827.78 : x
  2. Step 2: Convert to fraction form
    131,127,421.39/180,951,101.49 = 72,388,827.78/x
  3. Step 3: Cross multiply
    131,127,421.39x = 180,951,101.49 × 72,388,827.78
  4. Step 4: Simplify right side
    131,127,421.39x = 13,098,838,122,360,912
  5. Step 5: Solve for x
    x = 13,098,838,122,360,912/131,127,421.39
  6. Step 6: Final answer
    x = 99,893,965.61

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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.