Home / 129,033.92-178,062.22-72,447.68

Finding the Fourth Proportional to 129,033.92, 178,062.22 and 72,447.68

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Solution

The fourth proportional to 129,033.92, 178,062.22 and 72,447.68 is: 99,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,033.92 : 178,062.22 = 72,447.68 : x
  2. Step 2: Convert to fraction form
    129,033.92/178,062.22 = 72,447.68/x
  3. Step 3: Cross multiply
    129,033.92x = 178,062.22 × 72,447.68
  4. Step 4: Simplify right side
    129,033.92x = 12,900,194,734.65
  5. Step 5: Solve for x
    x = 12,900,194,734.65/129,033.92
  6. Step 6: Final answer
    x = 99,975.22

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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.