Home / 138,949.29-208,702.91-82,898.75

Finding the Fourth Proportional to 138,949.29, 208,702.91 and 82,898.75

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Solution

The fourth proportional to 138,949.29, 208,702.91 and 82,898.75 is: 124,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,949.29 : 208,702.91 = 82,898.75 : x
  2. Step 2: Convert to fraction form
    138,949.29/208,702.91 = 82,898.75/x
  3. Step 3: Cross multiply
    138,949.29x = 208,702.91 × 82,898.75
  4. Step 4: Simplify right side
    138,949.29x = 17,301,211,089.37
  5. Step 5: Solve for x
    x = 17,301,211,089.37/138,949.29
  6. Step 6: Final answer
    x = 124,514.57

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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.