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Finding the Fourth Proportional to 123,217.79, 170,033.47 and 69,499.60

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Solution

The fourth proportional to 123,217.79, 170,033.47 and 69,499.60 is: 95,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,217.79 : 170,033.47 = 69,499.60 : x
  2. Step 2: Convert to fraction form
    123,217.79/170,033.47 = 69,499.60/x
  3. Step 3: Cross multiply
    123,217.79x = 170,033.47 × 69,499.60
  4. Step 4: Simplify right side
    123,217.79x = 11,817,257,552.78
  5. Step 5: Solve for x
    x = 11,817,257,552.78/123,217.79
  6. Step 6: Final answer
    x = 95,905.45

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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.