Home / 140,119.20-209,666.80-103,255.20

Finding the Fourth Proportional to 140,119.20, 209,666.80 and 103,255.20

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Solution

The fourth proportional to 140,119.20, 209,666.80 and 103,255.20 is: 154,505.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,119.20 : 209,666.80 = 103,255.20 : x
  2. Step 2: Convert to fraction form
    140,119.20/209,666.80 = 103,255.20/x
  3. Step 3: Cross multiply
    140,119.20x = 209,666.80 × 103,255.20
  4. Step 4: Simplify right side
    140,119.20x = 21,649,187,367.36
  5. Step 5: Solve for x
    x = 21,649,187,367.36/140,119.20
  6. Step 6: Final answer
    x = 154,505.50

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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.