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Finding the Fourth Proportional to 144,379.88, 215,512.32 and 127,335.86

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Solution

The fourth proportional to 144,379.88, 215,512.32 and 127,335.86 is: 190,071.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,379.88 : 215,512.32 = 127,335.86 : x
  2. Step 2: Convert to fraction form
    144,379.88/215,512.32 = 127,335.86/x
  3. Step 3: Cross multiply
    144,379.88x = 215,512.32 × 127,335.86
  4. Step 4: Simplify right side
    144,379.88x = 27,442,446,815.91
  5. Step 5: Solve for x
    x = 27,442,446,815.91/144,379.88
  6. Step 6: Final answer
    x = 190,071.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.