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Finding the Fourth Proportional to 154,833.60, 213,672.69 and 86,865.60

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Solution

The fourth proportional to 154,833.60, 213,672.69 and 86,865.60 is: 119,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,833.60 : 213,672.69 = 86,865.60 : x
  2. Step 2: Convert to fraction form
    154,833.60/213,672.69 = 86,865.60/x
  3. Step 3: Cross multiply
    154,833.60x = 213,672.69 × 86,865.60
  4. Step 4: Simplify right side
    154,833.60x = 18,560,806,420.46
  5. Step 5: Solve for x
    x = 18,560,806,420.46/154,833.60
  6. Step 6: Final answer
    x = 119,875.83

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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.