Home / 129,611.76-178,864.24-73,023.12

Finding the Fourth Proportional to 129,611.76, 178,864.24 and 73,023.12

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Solution

The fourth proportional to 129,611.76, 178,864.24 and 73,023.12 is: 100,771.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,611.76 : 178,864.24 = 73,023.12 : x
  2. Step 2: Convert to fraction form
    129,611.76/178,864.24 = 73,023.12/x
  3. Step 3: Cross multiply
    129,611.76x = 178,864.24 × 73,023.12
  4. Step 4: Simplify right side
    129,611.76x = 13,061,224,861.23
  5. Step 5: Solve for x
    x = 13,061,224,861.23/129,611.76
  6. Step 6: Final answer
    x = 100,771.91

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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.