Home / 138,567.35-207,331.97-98,678.50

Finding the Fourth Proportional to 138,567.35, 207,331.97 and 98,678.50

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Solution

The fourth proportional to 138,567.35, 207,331.97 and 98,678.50 is: 147,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,567.35 : 207,331.97 = 98,678.50 : x
  2. Step 2: Convert to fraction form
    138,567.35/207,331.97 = 98,678.50/x
  3. Step 3: Cross multiply
    138,567.35x = 207,331.97 × 98,678.50
  4. Step 4: Simplify right side
    138,567.35x = 20,459,206,789.92
  5. Step 5: Solve for x
    x = 20,459,206,789.92/138,567.35
  6. Step 6: Final answer
    x = 147,648.10

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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.