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Finding the Fourth Proportional to 155,604.24, 214,731.76 and 87,627.88

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Solution

The fourth proportional to 155,604.24, 214,731.76 and 87,627.88 is: 120,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,604.24 : 214,731.76 = 87,627.88 : x
  2. Step 2: Convert to fraction form
    155,604.24/214,731.76 = 87,627.88/x
  3. Step 3: Cross multiply
    155,604.24x = 214,731.76 × 87,627.88
  4. Step 4: Simplify right side
    155,604.24x = 18,816,488,897.47
  5. Step 5: Solve for x
    x = 18,816,488,897.47/155,604.24
  6. Step 6: Final answer
    x = 120,925.30

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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.