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Finding the Fourth Proportional to 123,559.52, 170,512.28 and 66,970.89

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Solution

The fourth proportional to 123,559.52, 170,512.28 and 66,970.89 is: 92,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,559.52 : 170,512.28 = 66,970.89 : x
  2. Step 2: Convert to fraction form
    123,559.52/170,512.28 = 66,970.89/x
  3. Step 3: Cross multiply
    123,559.52x = 170,512.28 × 66,970.89
  4. Step 4: Simplify right side
    123,559.52x = 11,419,358,812.67
  5. Step 5: Solve for x
    x = 11,419,358,812.67/123,559.52
  6. Step 6: Final answer
    x = 92,419.91

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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.