Home / 103,433.10-155,149.65-68,003.70

Finding the Fourth Proportional to 103,433.10, 155,149.65 and 68,003.70

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Solution

The fourth proportional to 103,433.10, 155,149.65 and 68,003.70 is: 102,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,433.10 : 155,149.65 = 68,003.70 : x
  2. Step 2: Convert to fraction form
    103,433.10/155,149.65 = 68,003.70/x
  3. Step 3: Cross multiply
    103,433.10x = 155,149.65 × 68,003.70
  4. Step 4: Simplify right side
    103,433.10x = 10,550,750,253.71
  5. Step 5: Solve for x
    x = 10,550,750,253.71/103,433.10
  6. Step 6: Final answer
    x = 102,005.55

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1.5x scale

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.