Home / 133,378.30-199,630.05-103,635.10

Finding the Fourth Proportional to 133,378.30, 199,630.05 and 103,635.10

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Solution

The fourth proportional to 133,378.30, 199,630.05 and 103,635.10 is: 155,112.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,378.30 : 199,630.05 = 103,635.10 : x
  2. Step 2: Convert to fraction form
    133,378.30/199,630.05 = 103,635.10/x
  3. Step 3: Cross multiply
    133,378.30x = 199,630.05 × 103,635.10
  4. Step 4: Simplify right side
    133,378.30x = 20,688,680,194.76
  5. Step 5: Solve for x
    x = 20,688,680,194.76/133,378.30
  6. Step 6: Final answer
    x = 155,112.79

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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.