Home / 138,420.10-207,338.54-112,176.10

Finding the Fourth Proportional to 138,420.10, 207,338.54 and 112,176.10

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Solution

The fourth proportional to 138,420.10, 207,338.54 and 112,176.10 is: 168,027.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,420.10 : 207,338.54 = 112,176.10 : x
  2. Step 2: Convert to fraction form
    138,420.10/207,338.54 = 112,176.10/x
  3. Step 3: Cross multiply
    138,420.10x = 207,338.54 × 112,176.10
  4. Step 4: Simplify right side
    138,420.10x = 23,258,428,796.89
  5. Step 5: Solve for x
    x = 23,258,428,796.89/138,420.10
  6. Step 6: Final answer
    x = 168,027.83

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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.