Home / 123,589.97-170,572.37-78,272.17

Finding the Fourth Proportional to 123,589.97, 170,572.37 and 78,272.17

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Solution

The fourth proportional to 123,589.97, 170,572.37 and 78,272.17 is: 108,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,589.97 : 170,572.37 = 78,272.17 : x
  2. Step 2: Convert to fraction form
    123,589.97/170,572.37 = 78,272.17/x
  3. Step 3: Cross multiply
    123,589.97x = 170,572.37 × 78,272.17
  4. Step 4: Simplify right side
    123,589.97x = 13,351,069,683.62
  5. Step 5: Solve for x
    x = 13,351,069,683.62/123,589.97
  6. Step 6: Final answer
    x = 108,027.13

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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.