Home / 138,819.48-208,241.93-38,979.00

Finding the Fourth Proportional to 138,819.48, 208,241.93 and 38,979.00

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Solution

The fourth proportional to 138,819.48, 208,241.93 and 38,979.00 is: 58,472.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,819.48 : 208,241.93 = 38,979.00 : x
  2. Step 2: Convert to fraction form
    138,819.48/208,241.93 = 38,979.00/x
  3. Step 3: Cross multiply
    138,819.48x = 208,241.93 × 38,979.00
  4. Step 4: Simplify right side
    138,819.48x = 8,117,062,604.29
  5. Step 5: Solve for x
    x = 8,117,062,604.29/138,819.48
  6. Step 6: Final answer
    x = 58,472.07

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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.