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Finding the Fourth Proportional to 134,486.87, 185,592.42 and 80,772.80

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Solution

The fourth proportional to 134,486.87, 185,592.42 and 80,772.80 is: 111,466.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,486.87 : 185,592.42 = 80,772.80 : x
  2. Step 2: Convert to fraction form
    134,486.87/185,592.42 = 80,772.80/x
  3. Step 3: Cross multiply
    134,486.87x = 185,592.42 × 80,772.80
  4. Step 4: Simplify right side
    134,486.87x = 14,990,819,886.16
  5. Step 5: Solve for x
    x = 14,990,819,886.16/134,486.87
  6. Step 6: Final answer
    x = 111,466.79

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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.