Home / 129,532.32-178,734.80-72,942.24

Finding the Fourth Proportional to 129,532.32, 178,734.80 and 72,942.24

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Solution

The fourth proportional to 129,532.32, 178,734.80 and 72,942.24 is: 100,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,532.32 : 178,734.80 = 72,942.24 : x
  2. Step 2: Convert to fraction form
    129,532.32/178,734.80 = 72,942.24/x
  3. Step 3: Cross multiply
    129,532.32x = 178,734.80 × 72,942.24
  4. Step 4: Simplify right side
    129,532.32x = 13,037,316,677.95
  5. Step 5: Solve for x
    x = 13,037,316,677.95/129,532.32
  6. Step 6: Final answer
    x = 100,649.14

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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.