Home / 115,221.24-172,817.28-45,149.76

Finding the Fourth Proportional to 115,221.24, 172,817.28 and 45,149.76

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Solution

The fourth proportional to 115,221.24, 172,817.28 and 45,149.76 is: 67,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,221.24 : 172,817.28 = 45,149.76 : x
  2. Step 2: Convert to fraction form
    115,221.24/172,817.28 = 45,149.76/x
  3. Step 3: Cross multiply
    115,221.24x = 172,817.28 × 45,149.76
  4. Step 4: Simplify right side
    115,221.24x = 7,802,658,715.85
  5. Step 5: Solve for x
    x = 7,802,658,715.85/115,221.24
  6. Step 6: Final answer
    x = 67,718.93

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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.