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Finding the Fourth Proportional to 124,012, 171,155.28 and 75,642.04

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Solution

The fourth proportional to 124,012, 171,155.28 and 75,642.04 is: 104,397.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,012 : 171,155.28 = 75,642.04 : x
  2. Step 2: Convert to fraction form
    124,012/171,155.28 = 75,642.04/x
  3. Step 3: Cross multiply
    124,012x = 171,155.28 × 75,642.04
  4. Step 4: Simplify right side
    124,012x = 12,946,534,535.97
  5. Step 5: Solve for x
    x = 12,946,534,535.97/124,012
  6. Step 6: Final answer
    x = 104,397.43

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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.