Home / 129,200.67-178,302.89-71,845.80

Finding the Fourth Proportional to 129,200.67, 178,302.89 and 71,845.80

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Solution

The fourth proportional to 129,200.67, 178,302.89 and 71,845.80 is: 99,150.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,200.67 : 178,302.89 = 71,845.80 : x
  2. Step 2: Convert to fraction form
    129,200.67/178,302.89 = 71,845.80/x
  3. Step 3: Cross multiply
    129,200.67x = 178,302.89 × 71,845.80
  4. Step 4: Simplify right side
    129,200.67x = 12,810,313,415.13
  5. Step 5: Solve for x
    x = 12,810,313,415.13/129,200.67
  6. Step 6: Final answer
    x = 99,150.52

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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.