Home / 129,510.20-193,906.60-66,193.98

Finding the Fourth Proportional to 129,510.20, 193,906.60 and 66,193.98

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Solution

The fourth proportional to 129,510.20, 193,906.60 and 66,193.98 is: 99,107.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,510.20 : 193,906.60 = 66,193.98 : x
  2. Step 2: Convert to fraction form
    129,510.20/193,906.60 = 66,193.98/x
  3. Step 3: Cross multiply
    129,510.20x = 193,906.60 × 66,193.98
  4. Step 4: Simplify right side
    129,510.20x = 12,835,448,709.63
  5. Step 5: Solve for x
    x = 12,835,448,709.63/129,510.20
  6. Step 6: Final answer
    x = 99,107.63

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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.