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Finding the Fourth Proportional to 80,190, 110,534.72 and 63,167.30

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Solution

The fourth proportional to 80,190, 110,534.72 and 63,167.30 is: 87,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,190 : 110,534.72 = 63,167.30 : x
  2. Step 2: Convert to fraction form
    80,190/110,534.72 = 63,167.30/x
  3. Step 3: Cross multiply
    80,190x = 110,534.72 × 63,167.30
  4. Step 4: Simplify right side
    80,190x = 6,982,178,950.15
  5. Step 5: Solve for x
    x = 6,982,178,950.15/80,190
  6. Step 6: Final answer
    x = 87,070.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.