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Finding the Fourth Proportional to 123,292.53, 170,134 and 75,539.39

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Solution

The fourth proportional to 123,292.53, 170,134 and 75,539.39 is: 104,238.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,292.53 : 170,134 = 75,539.39 : x
  2. Step 2: Convert to fraction form
    123,292.53/170,134 = 75,539.39/x
  3. Step 3: Cross multiply
    123,292.53x = 170,134 × 75,539.39
  4. Step 4: Simplify right side
    123,292.53x = 12,851,818,578.26
  5. Step 5: Solve for x
    x = 12,851,818,578.26/123,292.53
  6. Step 6: Final answer
    x = 104,238.42

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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.