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Finding the Fourth Proportional to 123,491.07, 170,425.52 and 75,737.91

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Solution

The fourth proportional to 123,491.07, 170,425.52 and 75,737.91 is: 104,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.07 : 170,425.52 = 75,737.91 : x
  2. Step 2: Convert to fraction form
    123,491.07/170,425.52 = 75,737.91/x
  3. Step 3: Cross multiply
    123,491.07x = 170,425.52 × 75,737.91
  4. Step 4: Simplify right side
    123,491.07x = 12,907,672,316.77
  5. Step 5: Solve for x
    x = 12,907,672,316.77/123,491.07
  6. Step 6: Final answer
    x = 104,523.12

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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.