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Finding the Fourth Proportional to 96,542.40, 144,813.60 and 80,212.80

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Solution

The fourth proportional to 96,542.40, 144,813.60 and 80,212.80 is: 120,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,542.40 : 144,813.60 = 80,212.80 : x
  2. Step 2: Convert to fraction form
    96,542.40/144,813.60 = 80,212.80/x
  3. Step 3: Cross multiply
    96,542.40x = 144,813.60 × 80,212.80
  4. Step 4: Simplify right side
    96,542.40x = 11,615,904,334.08
  5. Step 5: Solve for x
    x = 11,615,904,334.08/96,542.40
  6. Step 6: Final answer
    x = 120,319.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.