Home / 120,231,125.18-165,919,274.32-65,226,981.68

Finding the Fourth Proportional to 120,231,125.18, 165,919,274.32 and 65,226,981.68

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Solution

The fourth proportional to 120,231,125.18, 165,919,274.32 and 65,226,981.68 is: 90,013,409.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,231,125.18 : 165,919,274.32 = 65,226,981.68 : x
  2. Step 2: Convert to fraction form
    120,231,125.18/165,919,274.32 = 65,226,981.68/x
  3. Step 3: Cross multiply
    120,231,125.18x = 165,919,274.32 × 65,226,981.68
  4. Step 4: Simplify right side
    120,231,125.18x = 10,822,413,466,429,534
  5. Step 5: Solve for x
    x = 10,822,413,466,429,534/120,231,125.18
  6. Step 6: Final answer
    x = 90,013,409.18

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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.