Home / 128,621.20-193,061.40-62,114.80

Finding the Fourth Proportional to 128,621.20, 193,061.40 and 62,114.80

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Solution

The fourth proportional to 128,621.20, 193,061.40 and 62,114.80 is: 93,234.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,621.20 : 193,061.40 = 62,114.80 : x
  2. Step 2: Convert to fraction form
    128,621.20/193,061.40 = 62,114.80/x
  3. Step 3: Cross multiply
    128,621.20x = 193,061.40 × 62,114.80
  4. Step 4: Simplify right side
    128,621.20x = 11,991,970,248.72
  5. Step 5: Solve for x
    x = 11,991,970,248.72/128,621.20
  6. Step 6: Final answer
    x = 93,234.79

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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.