Home / 138,401.10-207,310.05-112,157.10

Finding the Fourth Proportional to 138,401.10, 207,310.05 and 112,157.10

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Solution

The fourth proportional to 138,401.10, 207,310.05 and 112,157.10 is: 167,999.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,401.10 : 207,310.05 = 112,157.10 : x
  2. Step 2: Convert to fraction form
    138,401.10/207,310.05 = 112,157.10/x
  3. Step 3: Cross multiply
    138,401.10x = 207,310.05 × 112,157.10
  4. Step 4: Simplify right side
    138,401.10x = 23,251,294,008.86
  5. Step 5: Solve for x
    x = 23,251,294,008.86/138,401.10
  6. Step 6: Final answer
    x = 167,999.34

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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.