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Finding the Fourth Proportional to 120,006.77, 165,623.33 and 71,620.61

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Solution

The fourth proportional to 120,006.77, 165,623.33 and 71,620.61 is: 98,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,006.77 : 165,623.33 = 71,620.61 : x
  2. Step 2: Convert to fraction form
    120,006.77/165,623.33 = 71,620.61/x
  3. Step 3: Cross multiply
    120,006.77x = 165,623.33 × 71,620.61
  4. Step 4: Simplify right side
    120,006.77x = 11,862,043,275.77
  5. Step 5: Solve for x
    x = 11,862,043,275.77/120,006.77
  6. Step 6: Final answer
    x = 98,844.79

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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.