Home / 137,929.80-206,894.70-74,944.20

Finding the Fourth Proportional to 137,929.80, 206,894.70 and 74,944.20

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Solution

The fourth proportional to 137,929.80, 206,894.70 and 74,944.20 is: 112,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,929.80 : 206,894.70 = 74,944.20 : x
  2. Step 2: Convert to fraction form
    137,929.80/206,894.70 = 74,944.20/x
  3. Step 3: Cross multiply
    137,929.80x = 206,894.70 × 74,944.20
  4. Step 4: Simplify right side
    137,929.80x = 15,505,557,775.74
  5. Step 5: Solve for x
    x = 15,505,557,775.74/137,929.80
  6. Step 6: Final answer
    x = 112,416.30

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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.