Home / 80,755.36-121,153.20-28,165.60

Finding the Fourth Proportional to 80,755.36, 121,153.20 and 28,165.60

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Solution

The fourth proportional to 80,755.36, 121,153.20 and 28,165.60 is: 42,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.36 : 121,153.20 = 28,165.60 : x
  2. Step 2: Convert to fraction form
    80,755.36/121,153.20 = 28,165.60/x
  3. Step 3: Cross multiply
    80,755.36x = 121,153.20 × 28,165.60
  4. Step 4: Simplify right side
    80,755.36x = 3,412,352,569.92
  5. Step 5: Solve for x
    x = 3,412,352,569.92/80,755.36
  6. Step 6: Final answer
    x = 42,255.43

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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.