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Finding the Fourth Proportional to 103,611.61, 155,251.30 and 93,647.13

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Solution

The fourth proportional to 103,611.61, 155,251.30 and 93,647.13 is: 140,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.61 : 155,251.30 = 93,647.13 : x
  2. Step 2: Convert to fraction form
    103,611.61/155,251.30 = 93,647.13/x
  3. Step 3: Cross multiply
    103,611.61x = 155,251.30 × 93,647.13
  4. Step 4: Simplify right side
    103,611.61x = 14,538,838,673.77
  5. Step 5: Solve for x
    x = 14,538,838,673.77/103,611.61
  6. Step 6: Final answer
    x = 140,320.56

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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.