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Finding the Fourth Proportional to 123,595.74, 170,560.17 and 69,878.70

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Solution

The fourth proportional to 123,595.74, 170,560.17 and 69,878.70 is: 96,431.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,595.74 : 170,560.17 = 69,878.70 : x
  2. Step 2: Convert to fraction form
    123,595.74/170,560.17 = 69,878.70/x
  3. Step 3: Cross multiply
    123,595.74x = 170,560.17 × 69,878.70
  4. Step 4: Simplify right side
    123,595.74x = 11,918,522,951.38
  5. Step 5: Solve for x
    x = 11,918,522,951.38/123,595.74
  6. Step 6: Final answer
    x = 96,431.50

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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.