Home / 129,532.16-178,757.88-72,945.56

Finding the Fourth Proportional to 129,532.16, 178,757.88 and 72,945.56

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Solution

The fourth proportional to 129,532.16, 178,757.88 and 72,945.56 is: 100,666.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,532.16 : 178,757.88 = 72,945.56 : x
  2. Step 2: Convert to fraction form
    129,532.16/178,757.88 = 72,945.56/x
  3. Step 3: Cross multiply
    129,532.16x = 178,757.88 × 72,945.56
  4. Step 4: Simplify right side
    129,532.16x = 13,039,593,661.01
  5. Step 5: Solve for x
    x = 13,039,593,661.01/129,532.16
  6. Step 6: Final answer
    x = 100,666.84

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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.