Home / 138,257.40-207,296.82-75,911.16

Finding the Fourth Proportional to 138,257.40, 207,296.82 and 75,911.16

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Solution

The fourth proportional to 138,257.40, 207,296.82 and 75,911.16 is: 113,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,257.40 : 207,296.82 = 75,911.16 : x
  2. Step 2: Convert to fraction form
    138,257.40/207,296.82 = 75,911.16/x
  3. Step 3: Cross multiply
    138,257.40x = 207,296.82 × 75,911.16
  4. Step 4: Simplify right side
    138,257.40x = 15,736,142,070.51
  5. Step 5: Solve for x
    x = 15,736,142,070.51/138,257.40
  6. Step 6: Final answer
    x = 113,817.72

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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.