Home / 115,278.72-172,933.20-45,148.92

Finding the Fourth Proportional to 115,278.72, 172,933.20 and 45,148.92

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Solution

The fourth proportional to 115,278.72, 172,933.20 and 45,148.92 is: 67,729.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,278.72 : 172,933.20 = 45,148.92 : x
  2. Step 2: Convert to fraction form
    115,278.72/172,933.20 = 45,148.92/x
  3. Step 3: Cross multiply
    115,278.72x = 172,933.20 × 45,148.92
  4. Step 4: Simplify right side
    115,278.72x = 7,807,747,212.14
  5. Step 5: Solve for x
    x = 7,807,747,212.14/115,278.72
  6. Step 6: Final answer
    x = 67,729.30

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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.