Home / 138,819.60-208,167.84-63,921.60

Finding the Fourth Proportional to 138,819.60, 208,167.84 and 63,921.60

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Solution

The fourth proportional to 138,819.60, 208,167.84 and 63,921.60 is: 95,854.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,819.60 : 208,167.84 = 63,921.60 : x
  2. Step 2: Convert to fraction form
    138,819.60/208,167.84 = 63,921.60/x
  3. Step 3: Cross multiply
    138,819.60x = 208,167.84 × 63,921.60
  4. Step 4: Simplify right side
    138,819.60x = 13,306,421,401.34
  5. Step 5: Solve for x
    x = 13,306,421,401.34/138,819.60
  6. Step 6: Final answer
    x = 95,854.05

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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.