Home / 148,828.38-205,386.39-81,764.70

Finding the Fourth Proportional to 148,828.38, 205,386.39 and 81,764.70

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Solution

The fourth proportional to 148,828.38, 205,386.39 and 81,764.70 is: 112,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,828.38 : 205,386.39 = 81,764.70 : x
  2. Step 2: Convert to fraction form
    148,828.38/205,386.39 = 81,764.70/x
  3. Step 3: Cross multiply
    148,828.38x = 205,386.39 × 81,764.70
  4. Step 4: Simplify right side
    148,828.38x = 16,793,356,562.43
  5. Step 5: Solve for x
    x = 16,793,356,562.43/148,828.38
  6. Step 6: Final answer
    x = 112,837.06

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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.