Home / 120,231,129.96-165,919,280.90-65,226,986.46

Finding the Fourth Proportional to 120,231,129.96, 165,919,280.90 and 65,226,986.46

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Solution

The fourth proportional to 120,231,129.96, 165,919,280.90 and 65,226,986.46 is: 90,013,415.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,231,129.96 : 165,919,280.90 = 65,226,986.46 : x
  2. Step 2: Convert to fraction form
    120,231,129.96/165,919,280.90 = 65,226,986.46/x
  3. Step 3: Cross multiply
    120,231,129.96x = 165,919,280.90 × 65,226,986.46
  4. Step 4: Simplify right side
    120,231,129.96x = 10,822,414,688,391,102
  5. Step 5: Solve for x
    x = 10,822,414,688,391,102/120,231,129.96
  6. Step 6: Final answer
    x = 90,013,415.76

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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.