Home / 129,083.16-178,134.06-72,494.52

Finding the Fourth Proportional to 129,083.16, 178,134.06 and 72,494.52

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Solution

The fourth proportional to 129,083.16, 178,134.06 and 72,494.52 is: 100,042.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,083.16 : 178,134.06 = 72,494.52 : x
  2. Step 2: Convert to fraction form
    129,083.16/178,134.06 = 72,494.52/x
  3. Step 3: Cross multiply
    129,083.16x = 178,134.06 × 72,494.52
  4. Step 4: Simplify right side
    129,083.16x = 12,913,743,175.35
  5. Step 5: Solve for x
    x = 12,913,743,175.35/129,083.16
  6. Step 6: Final answer
    x = 100,042.04

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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.