Home / 129,543.13-178,766.67-72,182.44

Finding the Fourth Proportional to 129,543.13, 178,766.67 and 72,182.44

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Solution

The fourth proportional to 129,543.13, 178,766.67 and 72,182.44 is: 99,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,543.13 : 178,766.67 = 72,182.44 : x
  2. Step 2: Convert to fraction form
    129,543.13/178,766.67 = 72,182.44/x
  3. Step 3: Cross multiply
    129,543.13x = 178,766.67 × 72,182.44
  4. Step 4: Simplify right side
    129,543.13x = 12,903,814,431.27
  5. Step 5: Solve for x
    x = 12,903,814,431.27/129,543.13
  6. Step 6: Final answer
    x = 99,610.18

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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.