Home / 120,381.24-166,081.50-77,963.16

Finding the Fourth Proportional to 120,381.24, 166,081.50 and 77,963.16

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Solution

The fourth proportional to 120,381.24, 166,081.50 and 77,963.16 is: 107,560.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,381.24 : 166,081.50 = 77,963.16 : x
  2. Step 2: Convert to fraction form
    120,381.24/166,081.50 = 77,963.16/x
  3. Step 3: Cross multiply
    120,381.24x = 166,081.50 × 77,963.16
  4. Step 4: Simplify right side
    120,381.24x = 12,948,238,557.54
  5. Step 5: Solve for x
    x = 12,948,238,557.54/120,381.24
  6. Step 6: Final answer
    x = 107,560.27

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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.