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Finding the Fourth Proportional to 144,702.48, 199,666.20 and 81,042.96

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Solution

The fourth proportional to 144,702.48, 199,666.20 and 81,042.96 is: 111,826.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,702.48 : 199,666.20 = 81,042.96 : x
  2. Step 2: Convert to fraction form
    144,702.48/199,666.20 = 81,042.96/x
  3. Step 3: Cross multiply
    144,702.48x = 199,666.20 × 81,042.96
  4. Step 4: Simplify right side
    144,702.48x = 16,181,539,859.95
  5. Step 5: Solve for x
    x = 16,181,539,859.95/144,702.48
  6. Step 6: Final answer
    x = 111,826.28

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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.