Home / 120,560.17-180,815.55-45,654.49

Finding the Fourth Proportional to 120,560.17, 180,815.55 and 45,654.49

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Solution

The fourth proportional to 120,560.17, 180,815.55 and 45,654.49 is: 68,472.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,560.17 : 180,815.55 = 45,654.49 : x
  2. Step 2: Convert to fraction form
    120,560.17/180,815.55 = 45,654.49/x
  3. Step 3: Cross multiply
    120,560.17x = 180,815.55 × 45,654.49
  4. Step 4: Simplify right side
    120,560.17x = 8,255,041,719.32
  5. Step 5: Solve for x
    x = 8,255,041,719.32/120,560.17
  6. Step 6: Final answer
    x = 68,472.38

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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.