Home / 113,253.78-156,371.40-79,337.52

Finding the Fourth Proportional to 113,253.78, 156,371.40 and 79,337.52

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Solution

The fourth proportional to 113,253.78, 156,371.40 and 79,337.52 is: 109,542.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,253.78 : 156,371.40 = 79,337.52 : x
  2. Step 2: Convert to fraction form
    113,253.78/156,371.40 = 79,337.52/x
  3. Step 3: Cross multiply
    113,253.78x = 156,371.40 × 79,337.52
  4. Step 4: Simplify right side
    113,253.78x = 12,406,119,074.93
  5. Step 5: Solve for x
    x = 12,406,119,074.93/113,253.78
  6. Step 6: Final answer
    x = 109,542.65

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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.