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Finding the Fourth Proportional to 188,499.60, 260,122.56 and 103,615.92

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Solution

The fourth proportional to 188,499.60, 260,122.56 and 103,615.92 is: 142,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,499.60 : 260,122.56 = 103,615.92 : x
  2. Step 2: Convert to fraction form
    188,499.60/260,122.56 = 103,615.92/x
  3. Step 3: Cross multiply
    188,499.60x = 260,122.56 × 103,615.92
  4. Step 4: Simplify right side
    188,499.60x = 26,952,838,367.16
  5. Step 5: Solve for x
    x = 26,952,838,367.16/188,499.60
  6. Step 6: Final answer
    x = 142,986.18

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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.