Home / 120,666.11-166,560.87-74,760.98

Finding the Fourth Proportional to 120,666.11, 166,560.87 and 74,760.98

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Solution

The fourth proportional to 120,666.11, 166,560.87 and 74,760.98 is: 103,195.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,666.11 : 166,560.87 = 74,760.98 : x
  2. Step 2: Convert to fraction form
    120,666.11/166,560.87 = 74,760.98/x
  3. Step 3: Cross multiply
    120,666.11x = 166,560.87 × 74,760.98
  4. Step 4: Simplify right side
    120,666.11x = 12,452,254,287.25
  5. Step 5: Solve for x
    x = 12,452,254,287.25/120,666.11
  6. Step 6: Final answer
    x = 103,195.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.