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Finding the Fourth Proportional to 121,819.80, 182,729.70 and 59,611.80

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Solution

The fourth proportional to 121,819.80, 182,729.70 and 59,611.80 is: 89,417.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,819.80 : 182,729.70 = 59,611.80 : x
  2. Step 2: Convert to fraction form
    121,819.80/182,729.70 = 59,611.80/x
  3. Step 3: Cross multiply
    121,819.80x = 182,729.70 × 59,611.80
  4. Step 4: Simplify right side
    121,819.80x = 10,892,846,330.46
  5. Step 5: Solve for x
    x = 10,892,846,330.46/121,819.80
  6. Step 6: Final answer
    x = 89,417.70

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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.