Home / 137,921.12-206,881.37-36,719.20

Finding the Fourth Proportional to 137,921.12, 206,881.37 and 36,719.20

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Solution

The fourth proportional to 137,921.12, 206,881.37 and 36,719.20 is: 55,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,921.12 : 206,881.37 = 36,719.20 : x
  2. Step 2: Convert to fraction form
    137,921.12/206,881.37 = 36,719.20/x
  3. Step 3: Cross multiply
    137,921.12x = 206,881.37 × 36,719.20
  4. Step 4: Simplify right side
    137,921.12x = 7,596,518,401.30
  5. Step 5: Solve for x
    x = 7,596,518,401.30/137,921.12
  6. Step 6: Final answer
    x = 55,078.72

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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.