Home / 138,121.23-206,173.50-118,525.71

Finding the Fourth Proportional to 138,121.23, 206,173.50 and 118,525.71

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Solution

The fourth proportional to 138,121.23, 206,173.50 and 118,525.71 is: 176,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,121.23 : 206,173.50 = 118,525.71 : x
  2. Step 2: Convert to fraction form
    138,121.23/206,173.50 = 118,525.71/x
  3. Step 3: Cross multiply
    138,121.23x = 206,173.50 × 118,525.71
  4. Step 4: Simplify right side
    138,121.23x = 24,436,860,470.69
  5. Step 5: Solve for x
    x = 24,436,860,470.69/138,121.23
  6. Step 6: Final answer
    x = 176,923.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.