Home / 148,691.76-205,189.32-84,159.61

Finding the Fourth Proportional to 148,691.76, 205,189.32 and 84,159.61

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Solution

The fourth proportional to 148,691.76, 205,189.32 and 84,159.61 is: 116,137.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,691.76 : 205,189.32 = 84,159.61 : x
  2. Step 2: Convert to fraction form
    148,691.76/205,189.32 = 84,159.61/x
  3. Step 3: Cross multiply
    148,691.76x = 205,189.32 × 84,159.61
  4. Step 4: Simplify right side
    148,691.76x = 17,268,653,788.58
  5. Step 5: Solve for x
    x = 17,268,653,788.58/148,691.76
  6. Step 6: Final answer
    x = 116,137.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.