Home / 131,127,420.39-180,951,100.11-72,388,826.78

Finding the Fourth Proportional to 131,127,420.39, 180,951,100.11 and 72,388,826.78

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Solution

The fourth proportional to 131,127,420.39, 180,951,100.11 and 72,388,826.78 is: 99,893,964.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,127,420.39 : 180,951,100.11 = 72,388,826.78 : x
  2. Step 2: Convert to fraction form
    131,127,420.39/180,951,100.11 = 72,388,826.78/x
  3. Step 3: Cross multiply
    131,127,420.39x = 180,951,100.11 × 72,388,826.78
  4. Step 4: Simplify right side
    131,127,420.39x = 13,098,837,840,608,476
  5. Step 5: Solve for x
    x = 13,098,837,840,608,476/131,127,420.39
  6. Step 6: Final answer
    x = 99,893,964.22

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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.