Home / 102,666.38-141,669.60-57,340.76

Finding the Fourth Proportional to 102,666.38, 141,669.60 and 57,340.76

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Solution

The fourth proportional to 102,666.38, 141,669.60 and 57,340.76 is: 79,124.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,666.38 : 141,669.60 = 57,340.76 : x
  2. Step 2: Convert to fraction form
    102,666.38/141,669.60 = 57,340.76/x
  3. Step 3: Cross multiply
    102,666.38x = 141,669.60 × 57,340.76
  4. Step 4: Simplify right side
    102,666.38x = 8,123,442,532.90
  5. Step 5: Solve for x
    x = 8,123,442,532.90/102,666.38
  6. Step 6: Final answer
    x = 79,124.66

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1.5x scale

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.