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Finding the Fourth Proportional to 123,501.88, 170,432.19 and 66,913.25

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Solution

The fourth proportional to 123,501.88, 170,432.19 and 66,913.25 is: 92,340.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,501.88 : 170,432.19 = 66,913.25 : x
  2. Step 2: Convert to fraction form
    123,501.88/170,432.19 = 66,913.25/x
  3. Step 3: Cross multiply
    123,501.88x = 170,432.19 × 66,913.25
  4. Step 4: Simplify right side
    123,501.88x = 11,404,171,737.52
  5. Step 5: Solve for x
    x = 11,404,171,737.52/123,501.88
  6. Step 6: Final answer
    x = 92,340.07

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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.