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Finding the Fourth Proportional to 104,542.20, 156,827.70 and 45,376.20

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Solution

The fourth proportional to 104,542.20, 156,827.70 and 45,376.20 is: 68,070.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,542.20 : 156,827.70 = 45,376.20 : x
  2. Step 2: Convert to fraction form
    104,542.20/156,827.70 = 45,376.20/x
  3. Step 3: Cross multiply
    104,542.20x = 156,827.70 × 45,376.20
  4. Step 4: Simplify right side
    104,542.20x = 7,116,245,080.74
  5. Step 5: Solve for x
    x = 7,116,245,080.74/104,542.20
  6. Step 6: Final answer
    x = 68,070.55

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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.