Home / 102,748.28-141,789.96-57,426.64

Finding the Fourth Proportional to 102,748.28, 141,789.96 and 57,426.64

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Solution

The fourth proportional to 102,748.28, 141,789.96 and 57,426.64 is: 79,247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,748.28 : 141,789.96 = 57,426.64 : x
  2. Step 2: Convert to fraction form
    102,748.28/141,789.96 = 57,426.64/x
  3. Step 3: Cross multiply
    102,748.28x = 141,789.96 × 57,426.64
  4. Step 4: Simplify right side
    102,748.28x = 8,142,520,988.53
  5. Step 5: Solve for x
    x = 8,142,520,988.53/102,748.28
  6. Step 6: Final answer
    x = 79,247.27

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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.