Home / 120,665.15-166,542.14-69,686.18

Finding the Fourth Proportional to 120,665.15, 166,542.14 and 69,686.18

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Solution

The fourth proportional to 120,665.15, 166,542.14 and 69,686.18 is: 96,180.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,665.15 : 166,542.14 = 69,686.18 : x
  2. Step 2: Convert to fraction form
    120,665.15/166,542.14 = 69,686.18/x
  3. Step 3: Cross multiply
    120,665.15x = 166,542.14 × 69,686.18
  4. Step 4: Simplify right side
    120,665.15x = 11,605,685,545.63
  5. Step 5: Solve for x
    x = 11,605,685,545.63/120,665.15
  6. Step 6: Final answer
    x = 96,180.92

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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.