Home / 121,151.60-181,835.40-71,169.20

Finding the Fourth Proportional to 121,151.60, 181,835.40 and 71,169.20

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Solution

The fourth proportional to 121,151.60, 181,835.40 and 71,169.20 is: 106,817.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,151.60 : 181,835.40 = 71,169.20 : x
  2. Step 2: Convert to fraction form
    121,151.60/181,835.40 = 71,169.20/x
  3. Step 3: Cross multiply
    121,151.60x = 181,835.40 × 71,169.20
  4. Step 4: Simplify right side
    121,151.60x = 12,941,079,949.68
  5. Step 5: Solve for x
    x = 12,941,079,949.68/121,151.60
  6. Step 6: Final answer
    x = 106,817.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.