Home / 123,712.20-185,957.10-121,379.40

Finding the Fourth Proportional to 123,712.20, 185,957.10 and 121,379.40

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Solution

The fourth proportional to 123,712.20, 185,957.10 and 121,379.40 is: 182,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,712.20 : 185,957.10 = 121,379.40 : x
  2. Step 2: Convert to fraction form
    123,712.20/185,957.10 = 121,379.40/x
  3. Step 3: Cross multiply
    123,712.20x = 185,957.10 × 121,379.40
  4. Step 4: Simplify right side
    123,712.20x = 22,571,361,223.74
  5. Step 5: Solve for x
    x = 22,571,361,223.74/123,712.20
  6. Step 6: Final answer
    x = 182,450.57

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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.