Home / 120,623.20-166,456.06-72,868.24

Finding the Fourth Proportional to 120,623.20, 166,456.06 and 72,868.24

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Solution

The fourth proportional to 120,623.20, 166,456.06 and 72,868.24 is: 100,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.20 : 166,456.06 = 72,868.24 : x
  2. Step 2: Convert to fraction form
    120,623.20/166,456.06 = 72,868.24/x
  3. Step 3: Cross multiply
    120,623.20x = 166,456.06 × 72,868.24
  4. Step 4: Simplify right side
    120,623.20x = 12,129,360,129.53
  5. Step 5: Solve for x
    x = 12,129,360,129.53/120,623.20
  6. Step 6: Final answer
    x = 100,555.78

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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.