Home / 102,664.38-141,666.84-57,338.76

Finding the Fourth Proportional to 102,664.38, 141,666.84 and 57,338.76

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Solution

The fourth proportional to 102,664.38, 141,666.84 and 57,338.76 is: 79,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,664.38 : 141,666.84 = 57,338.76 : x
  2. Step 2: Convert to fraction form
    102,664.38/141,666.84 = 57,338.76/x
  3. Step 3: Cross multiply
    102,664.38x = 141,666.84 × 57,338.76
  4. Step 4: Simplify right side
    102,664.38x = 8,123,000,938.72
  5. Step 5: Solve for x
    x = 8,123,000,938.72/102,664.38
  6. Step 6: Final answer
    x = 79,121.90

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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.