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Finding the Fourth Proportional to 144,909.78, 199,927.68 and 87,527.66

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Solution

The fourth proportional to 144,909.78, 199,927.68 and 87,527.66 is: 120,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,909.78 : 199,927.68 = 87,527.66 : x
  2. Step 2: Convert to fraction form
    144,909.78/199,927.68 = 87,527.66/x
  3. Step 3: Cross multiply
    144,909.78x = 199,927.68 × 87,527.66
  4. Step 4: Simplify right side
    144,909.78x = 17,499,200,671.76
  5. Step 5: Solve for x
    x = 17,499,200,671.76/144,909.78
  6. Step 6: Final answer
    x = 120,759.28

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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.