Home / 129,081.16-178,100.58-75,335.56

Finding the Fourth Proportional to 129,081.16, 178,100.58 and 75,335.56

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Solution

The fourth proportional to 129,081.16, 178,100.58 and 75,335.56 is: 103,944.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,081.16 : 178,100.58 = 75,335.56 : x
  2. Step 2: Convert to fraction form
    129,081.16/178,100.58 = 75,335.56/x
  3. Step 3: Cross multiply
    129,081.16x = 178,100.58 × 75,335.56
  4. Step 4: Simplify right side
    129,081.16x = 13,417,306,930.62
  5. Step 5: Solve for x
    x = 13,417,306,930.62/129,081.16
  6. Step 6: Final answer
    x = 103,944.73

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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.