Home / 129,532.87-178,724.23-72,944.23

Finding the Fourth Proportional to 129,532.87, 178,724.23 and 72,944.23

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Solution

The fourth proportional to 129,532.87, 178,724.23 and 72,944.23 is: 100,645.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,532.87 : 178,724.23 = 72,944.23 : x
  2. Step 2: Convert to fraction form
    129,532.87/178,724.23 = 72,944.23/x
  3. Step 3: Cross multiply
    129,532.87x = 178,724.23 × 72,944.23
  4. Step 4: Simplify right side
    129,532.87x = 13,036,901,339.69
  5. Step 5: Solve for x
    x = 13,036,901,339.69/129,532.87
  6. Step 6: Final answer
    x = 100,645.51

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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.