Home / 138,888.36-208,358.46-45,459.72

Finding the Fourth Proportional to 138,888.36, 208,358.46 and 45,459.72

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Solution

The fourth proportional to 138,888.36, 208,358.46 and 45,459.72 is: 68,198.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,888.36 : 208,358.46 = 45,459.72 : x
  2. Step 2: Convert to fraction form
    138,888.36/208,358.46 = 45,459.72/x
  3. Step 3: Cross multiply
    138,888.36x = 208,358.46 × 45,459.72
  4. Step 4: Simplify right side
    138,888.36x = 9,471,917,251.23
  5. Step 5: Solve for x
    x = 9,471,917,251.23/138,888.36
  6. Step 6: Final answer
    x = 68,198.06

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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.