Home / 115,281.10-172,936.76-45,151.30

Finding the Fourth Proportional to 115,281.10, 172,936.76 and 45,151.30

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Solution

The fourth proportional to 115,281.10, 172,936.76 and 45,151.30 is: 67,732.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,281.10 : 172,936.76 = 45,151.30 : x
  2. Step 2: Convert to fraction form
    115,281.10/172,936.76 = 45,151.30/x
  3. Step 3: Cross multiply
    115,281.10x = 172,936.76 × 45,151.30
  4. Step 4: Simplify right side
    115,281.10x = 7,808,319,531.79
  5. Step 5: Solve for x
    x = 7,808,319,531.79/115,281.10
  6. Step 6: Final answer
    x = 67,732.87

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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.