Home / 138,430.05-207,662.36-54,179.32

Finding the Fourth Proportional to 138,430.05, 207,662.36 and 54,179.32

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Solution

The fourth proportional to 138,430.05, 207,662.36 and 54,179.32 is: 81,275.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,430.05 : 207,662.36 = 54,179.32 : x
  2. Step 2: Convert to fraction form
    138,430.05/207,662.36 = 54,179.32/x
  3. Step 3: Cross multiply
    138,430.05x = 207,662.36 × 54,179.32
  4. Step 4: Simplify right side
    138,430.05x = 11,251,005,454.40
  5. Step 5: Solve for x
    x = 11,251,005,454.40/138,430.05
  6. Step 6: Final answer
    x = 81,275.75

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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.