Home / 129,437.95-178,555.86-89,081.65

Finding the Fourth Proportional to 129,437.95, 178,555.86 and 89,081.65

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Solution

The fourth proportional to 129,437.95, 178,555.86 and 89,081.65 is: 122,885.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,437.95 : 178,555.86 = 89,081.65 : x
  2. Step 2: Convert to fraction form
    129,437.95/178,555.86 = 89,081.65/x
  3. Step 3: Cross multiply
    129,437.95x = 178,555.86 × 89,081.65
  4. Step 4: Simplify right side
    129,437.95x = 15,906,050,625.97
  5. Step 5: Solve for x
    x = 15,906,050,625.97/129,437.95
  6. Step 6: Final answer
    x = 122,885.53

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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.