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Finding the Fourth Proportional to 154,947.46, 213,818.50 and 86,958.08

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Solution

The fourth proportional to 154,947.46, 213,818.50 and 86,958.08 is: 119,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,947.46 : 213,818.50 = 86,958.08 : x
  2. Step 2: Convert to fraction form
    154,947.46/213,818.50 = 86,958.08/x
  3. Step 3: Cross multiply
    154,947.46x = 213,818.50 × 86,958.08
  4. Step 4: Simplify right side
    154,947.46x = 18,593,246,228.48
  5. Step 5: Solve for x
    x = 18,593,246,228.48/154,947.46
  6. Step 6: Final answer
    x = 119,997.10

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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.