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Finding the Fourth Proportional to 123,675.80, 185,616.10 and 57,218.20

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Solution

The fourth proportional to 123,675.80, 185,616.10 and 57,218.20 is: 85,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,675.80 : 185,616.10 = 57,218.20 : x
  2. Step 2: Convert to fraction form
    123,675.80/185,616.10 = 57,218.20/x
  3. Step 3: Cross multiply
    123,675.80x = 185,616.10 × 57,218.20
  4. Step 4: Simplify right side
    123,675.80x = 10,620,619,133.02
  5. Step 5: Solve for x
    x = 10,620,619,133.02/123,675.80
  6. Step 6: Final answer
    x = 85,874.68

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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.