Home / 129,373.68-178,535.34-72,785.04

Finding the Fourth Proportional to 129,373.68, 178,535.34 and 72,785.04

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Solution

The fourth proportional to 129,373.68, 178,535.34 and 72,785.04 is: 100,443.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,373.68 : 178,535.34 = 72,785.04 : x
  2. Step 2: Convert to fraction form
    129,373.68/178,535.34 = 72,785.04/x
  3. Step 3: Cross multiply
    129,373.68x = 178,535.34 × 72,785.04
  4. Step 4: Simplify right side
    129,373.68x = 12,994,701,863.31
  5. Step 5: Solve for x
    x = 12,994,701,863.31/129,373.68
  6. Step 6: Final answer
    x = 100,443.16

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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.