Home / 115,277.10-172,930.76-45,147.30

Finding the Fourth Proportional to 115,277.10, 172,930.76 and 45,147.30

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Solution

The fourth proportional to 115,277.10, 172,930.76 and 45,147.30 is: 67,726.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,277.10 : 172,930.76 = 45,147.30 : x
  2. Step 2: Convert to fraction form
    115,277.10/172,930.76 = 45,147.30/x
  3. Step 3: Cross multiply
    115,277.10x = 172,930.76 × 45,147.30
  4. Step 4: Simplify right side
    115,277.10x = 7,807,356,900.95
  5. Step 5: Solve for x
    x = 7,807,356,900.95/115,277.10
  6. Step 6: Final answer
    x = 67,726.87

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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.