Home / 82,327.20-123,490.80-81,452.40

Finding the Fourth Proportional to 82,327.20, 123,490.80 and 81,452.40

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Solution

The fourth proportional to 82,327.20, 123,490.80 and 81,452.40 is: 122,178.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,327.20 : 123,490.80 = 81,452.40 : x
  2. Step 2: Convert to fraction form
    82,327.20/123,490.80 = 81,452.40/x
  3. Step 3: Cross multiply
    82,327.20x = 123,490.80 × 81,452.40
  4. Step 4: Simplify right side
    82,327.20x = 10,058,622,037.92
  5. Step 5: Solve for x
    x = 10,058,622,037.92/82,327.20
  6. Step 6: Final answer
    x = 122,178.60

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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.