Home / 103,432.20-155,148.30-68,002.80

Finding the Fourth Proportional to 103,432.20, 155,148.30 and 68,002.80

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Solution

The fourth proportional to 103,432.20, 155,148.30 and 68,002.80 is: 102,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.20 : 155,148.30 = 68,002.80 : x
  2. Step 2: Convert to fraction form
    103,432.20/155,148.30 = 68,002.80/x
  3. Step 3: Cross multiply
    103,432.20x = 155,148.30 × 68,002.80
  4. Step 4: Simplify right side
    103,432.20x = 10,550,518,815.24
  5. Step 5: Solve for x
    x = 10,550,518,815.24/103,432.20
  6. Step 6: Final answer
    x = 102,004.20

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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.