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Finding the Fourth Proportional to 113,003.80, 169,505.70 and 100,319.20

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Solution

The fourth proportional to 113,003.80, 169,505.70 and 100,319.20 is: 150,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,003.80 : 169,505.70 = 100,319.20 : x
  2. Step 2: Convert to fraction form
    113,003.80/169,505.70 = 100,319.20/x
  3. Step 3: Cross multiply
    113,003.80x = 169,505.70 × 100,319.20
  4. Step 4: Simplify right side
    113,003.80x = 17,004,676,219.44
  5. Step 5: Solve for x
    x = 17,004,676,219.44/113,003.80
  6. Step 6: Final answer
    x = 150,478.80

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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.