Home / 129,524.80-178,757.28-78,564.16

Finding the Fourth Proportional to 129,524.80, 178,757.28 and 78,564.16

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Solution

The fourth proportional to 129,524.80, 178,757.28 and 78,564.16 is: 108,426.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,524.80 : 178,757.28 = 78,564.16 : x
  2. Step 2: Convert to fraction form
    129,524.80/178,757.28 = 78,564.16/x
  3. Step 3: Cross multiply
    129,524.80x = 178,757.28 × 78,564.16
  4. Step 4: Simplify right side
    129,524.80x = 14,043,915,547.08
  5. Step 5: Solve for x
    x = 14,043,915,547.08/129,524.80
  6. Step 6: Final answer
    x = 108,426.46

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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.