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Finding the Fourth Proportional to 121,560.80, 182,320.01 and 54,985.33

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Solution

The fourth proportional to 121,560.80, 182,320.01 and 54,985.33 is: 82,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,560.80 : 182,320.01 = 54,985.33 : x
  2. Step 2: Convert to fraction form
    121,560.80/182,320.01 = 54,985.33/x
  3. Step 3: Cross multiply
    121,560.80x = 182,320.01 × 54,985.33
  4. Step 4: Simplify right side
    121,560.80x = 10,024,924,728.93
  5. Step 5: Solve for x
    x = 10,024,924,728.93/121,560.80
  6. Step 6: Final answer
    x = 82,468.40

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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.