Home / 129,512.32-178,707.20-72,922.24

Finding the Fourth Proportional to 129,512.32, 178,707.20 and 72,922.24

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Solution

The fourth proportional to 129,512.32, 178,707.20 and 72,922.24 is: 100,621.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,512.32 : 178,707.20 = 72,922.24 : x
  2. Step 2: Convert to fraction form
    129,512.32/178,707.20 = 72,922.24/x
  3. Step 3: Cross multiply
    129,512.32x = 178,707.20 × 72,922.24
  4. Step 4: Simplify right side
    129,512.32x = 13,031,729,328.13
  5. Step 5: Solve for x
    x = 13,031,729,328.13/129,512.32
  6. Step 6: Final answer
    x = 100,621.54

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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.