Home / 104,416.20-156,278.70-80,915.40

Finding the Fourth Proportional to 104,416.20, 156,278.70 and 80,915.40

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Solution

The fourth proportional to 104,416.20, 156,278.70 and 80,915.40 is: 121,105.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,416.20 : 156,278.70 = 80,915.40 : x
  2. Step 2: Convert to fraction form
    104,416.20/156,278.70 = 80,915.40/x
  3. Step 3: Cross multiply
    104,416.20x = 156,278.70 × 80,915.40
  4. Step 4: Simplify right side
    104,416.20x = 12,645,353,521.98
  5. Step 5: Solve for x
    x = 12,645,353,521.98/104,416.20
  6. Step 6: Final answer
    x = 121,105.28

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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.