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Finding the Fourth Proportional to 120,247.80, 165,941.10 and 66,532.92

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Solution

The fourth proportional to 120,247.80, 165,941.10 and 66,532.92 is: 91,814.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,247.80 : 165,941.10 = 66,532.92 : x
  2. Step 2: Convert to fraction form
    120,247.80/165,941.10 = 66,532.92/x
  3. Step 3: Cross multiply
    120,247.80x = 165,941.10 × 66,532.92
  4. Step 4: Simplify right side
    120,247.80x = 11,040,545,931.01
  5. Step 5: Solve for x
    x = 11,040,545,931.01/120,247.80
  6. Step 6: Final answer
    x = 91,814.95

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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.