Home / 138,330.20-207,495.30-103,338.20

Finding the Fourth Proportional to 138,330.20, 207,495.30 and 103,338.20

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Solution

The fourth proportional to 138,330.20, 207,495.30 and 103,338.20 is: 155,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,330.20 : 207,495.30 = 103,338.20 : x
  2. Step 2: Convert to fraction form
    138,330.20/207,495.30 = 103,338.20/x
  3. Step 3: Cross multiply
    138,330.20x = 207,495.30 × 103,338.20
  4. Step 4: Simplify right side
    138,330.20x = 21,442,190,810.46
  5. Step 5: Solve for x
    x = 21,442,190,810.46/138,330.20
  6. Step 6: Final answer
    x = 155,007.30

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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.