Home / 129,338.56-178,460.43-75,613.15

Finding the Fourth Proportional to 129,338.56, 178,460.43 and 75,613.15

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Solution

The fourth proportional to 129,338.56, 178,460.43 and 75,613.15 is: 104,330.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,338.56 : 178,460.43 = 75,613.15 : x
  2. Step 2: Convert to fraction form
    129,338.56/178,460.43 = 75,613.15/x
  3. Step 3: Cross multiply
    129,338.56x = 178,460.43 × 75,613.15
  4. Step 4: Simplify right side
    129,338.56x = 13,493,955,262.65
  5. Step 5: Solve for x
    x = 13,493,955,262.65/129,338.56
  6. Step 6: Final answer
    x = 104,330.49

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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.