Home / 105,432.20-158,148.30-100,766.60

Finding the Fourth Proportional to 105,432.20, 158,148.30 and 100,766.60

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Solution

The fourth proportional to 105,432.20, 158,148.30 and 100,766.60 is: 151,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.20 : 158,148.30 = 100,766.60 : x
  2. Step 2: Convert to fraction form
    105,432.20/158,148.30 = 100,766.60/x
  3. Step 3: Cross multiply
    105,432.20x = 158,148.30 × 100,766.60
  4. Step 4: Simplify right side
    105,432.20x = 15,936,066,486.78
  5. Step 5: Solve for x
    x = 15,936,066,486.78/105,432.20
  6. Step 6: Final answer
    x = 151,149.90

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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.