Home / 124,378.20-186,362.10-71,695.80

Finding the Fourth Proportional to 124,378.20, 186,362.10 and 71,695.80

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Solution

The fourth proportional to 124,378.20, 186,362.10 and 71,695.80 is: 107,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,378.20 : 186,362.10 = 71,695.80 : x
  2. Step 2: Convert to fraction form
    124,378.20/186,362.10 = 71,695.80/x
  3. Step 3: Cross multiply
    124,378.20x = 186,362.10 × 71,695.80
  4. Step 4: Simplify right side
    124,378.20x = 13,361,379,849.18
  5. Step 5: Solve for x
    x = 13,361,379,849.18/124,378.20
  6. Step 6: Final answer
    x = 107,425.42

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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.