Home / 129,020.20-193,271.10-89,621.80

Finding the Fourth Proportional to 129,020.20, 193,271.10 and 89,621.80

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Solution

The fourth proportional to 129,020.20, 193,271.10 and 89,621.80 is: 134,252.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,020.20 : 193,271.10 = 89,621.80 : x
  2. Step 2: Convert to fraction form
    129,020.20/193,271.10 = 89,621.80/x
  3. Step 3: Cross multiply
    129,020.20x = 193,271.10 × 89,621.80
  4. Step 4: Simplify right side
    129,020.20x = 17,321,303,869.98
  5. Step 5: Solve for x
    x = 17,321,303,869.98/129,020.20
  6. Step 6: Final answer
    x = 134,252.65

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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.