Home / 123,948.45-185,922.73-81,818.68

Finding the Fourth Proportional to 123,948.45, 185,922.73 and 81,818.68

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Solution

The fourth proportional to 123,948.45, 185,922.73 and 81,818.68 is: 122,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,948.45 : 185,922.73 = 81,818.68 : x
  2. Step 2: Convert to fraction form
    123,948.45/185,922.73 = 81,818.68/x
  3. Step 3: Cross multiply
    123,948.45x = 185,922.73 × 81,818.68
  4. Step 4: Simplify right side
    123,948.45x = 15,211,952,350.60
  5. Step 5: Solve for x
    x = 15,211,952,350.60/123,948.45
  6. Step 6: Final answer
    x = 122,728.06

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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.