Home / 129,386.16-178,550.33-72,797.13

Finding the Fourth Proportional to 129,386.16, 178,550.33 and 72,797.13

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Solution

The fourth proportional to 129,386.16, 178,550.33 and 72,797.13 is: 100,458.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,386.16 : 178,550.33 = 72,797.13 : x
  2. Step 2: Convert to fraction form
    129,386.16/178,550.33 = 72,797.13/x
  3. Step 3: Cross multiply
    129,386.16x = 178,550.33 × 72,797.13
  4. Step 4: Simplify right side
    129,386.16x = 12,997,951,220.57
  5. Step 5: Solve for x
    x = 12,997,951,220.57/129,386.16
  6. Step 6: Final answer
    x = 100,458.59

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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.