Home / 120,755.59-166,639.47-72,384.85

Finding the Fourth Proportional to 120,755.59, 166,639.47 and 72,384.85

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Solution

The fourth proportional to 120,755.59, 166,639.47 and 72,384.85 is: 99,889.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,755.59 : 166,639.47 = 72,384.85 : x
  2. Step 2: Convert to fraction form
    120,755.59/166,639.47 = 72,384.85/x
  3. Step 3: Cross multiply
    120,755.59x = 166,639.47 × 72,384.85
  4. Step 4: Simplify right side
    120,755.59x = 12,062,172,387.79
  5. Step 5: Solve for x
    x = 12,062,172,387.79/120,755.59
  6. Step 6: Final answer
    x = 99,889.14

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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.