Home / 129,008.08-178,037.04-71,647.66

Finding the Fourth Proportional to 129,008.08, 178,037.04 and 71,647.66

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Solution

The fourth proportional to 129,008.08, 178,037.04 and 71,647.66 is: 98,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,008.08 : 178,037.04 = 71,647.66 : x
  2. Step 2: Convert to fraction form
    129,008.08/178,037.04 = 71,647.66/x
  3. Step 3: Cross multiply
    129,008.08x = 178,037.04 × 71,647.66
  4. Step 4: Simplify right side
    129,008.08x = 12,755,937,309.33
  5. Step 5: Solve for x
    x = 12,755,937,309.33/129,008.08
  6. Step 6: Final answer
    x = 98,877.04

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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.