Home / 129,805.25-179,061.80-89,538.93

Finding the Fourth Proportional to 129,805.25, 179,061.80 and 89,538.93

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Solution

The fourth proportional to 129,805.25, 179,061.80 and 89,538.93 is: 123,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,805.25 : 179,061.80 = 89,538.93 : x
  2. Step 2: Convert to fraction form
    129,805.25/179,061.80 = 89,538.93/x
  3. Step 3: Cross multiply
    129,805.25x = 179,061.80 × 89,538.93
  4. Step 4: Simplify right side
    129,805.25x = 16,033,001,528.18
  5. Step 5: Solve for x
    x = 16,033,001,528.18/129,805.25
  6. Step 6: Final answer
    x = 123,515.82

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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.