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Finding the Fourth Proportional to 115,379.88, 173,069.88 and 45,279.24

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Solution

The fourth proportional to 115,379.88, 173,069.88 and 45,279.24 is: 67,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,379.88 : 173,069.88 = 45,279.24 : x
  2. Step 2: Convert to fraction form
    115,379.88/173,069.88 = 45,279.24/x
  3. Step 3: Cross multiply
    115,379.88x = 173,069.88 × 45,279.24
  4. Step 4: Simplify right side
    115,379.88x = 7,836,472,633.29
  5. Step 5: Solve for x
    x = 7,836,472,633.29/115,379.88
  6. Step 6: Final answer
    x = 67,918.88

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1.5x scale

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.