Home / 129,180.16-178,252.68-74,741.68

Finding the Fourth Proportional to 129,180.16, 178,252.68 and 74,741.68

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Solution

The fourth proportional to 129,180.16, 178,252.68 and 74,741.68 is: 103,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,180.16 : 178,252.68 = 74,741.68 : x
  2. Step 2: Convert to fraction form
    129,180.16/178,252.68 = 74,741.68/x
  3. Step 3: Cross multiply
    129,180.16x = 178,252.68 × 74,741.68
  4. Step 4: Simplify right side
    129,180.16x = 13,322,904,767.70
  5. Step 5: Solve for x
    x = 13,322,904,767.70/129,180.16
  6. Step 6: Final answer
    x = 103,134.30

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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.