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Finding the Fourth Proportional to 103,490.88, 155,125.80 and 59,021.88

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Solution

The fourth proportional to 103,490.88, 155,125.80 and 59,021.88 is: 88,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,490.88 : 155,125.80 = 59,021.88 : x
  2. Step 2: Convert to fraction form
    103,490.88/155,125.80 = 59,021.88/x
  3. Step 3: Cross multiply
    103,490.88x = 155,125.80 × 59,021.88
  4. Step 4: Simplify right side
    103,490.88x = 9,155,816,352.50
  5. Step 5: Solve for x
    x = 9,155,816,352.50/103,490.88
  6. Step 6: Final answer
    x = 88,469.79

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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.