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Finding the Fourth Proportional to 130,174.92, 195,279.84 and 45,915.28

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Solution

The fourth proportional to 130,174.92, 195,279.84 and 45,915.28 is: 68,879.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,174.92 : 195,279.84 = 45,915.28 : x
  2. Step 2: Convert to fraction form
    130,174.92/195,279.84 = 45,915.28/x
  3. Step 3: Cross multiply
    130,174.92x = 195,279.84 × 45,915.28
  4. Step 4: Simplify right side
    130,174.92x = 8,966,328,531.96
  5. Step 5: Solve for x
    x = 8,966,328,531.96/130,174.92
  6. Step 6: Final answer
    x = 68,879.08

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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.