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Finding the Fourth Proportional to 162,104.68, 243,040.58 and 76,668.11

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Solution

The fourth proportional to 162,104.68, 243,040.58 and 76,668.11 is: 114,947.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,104.68 : 243,040.58 = 76,668.11 : x
  2. Step 2: Convert to fraction form
    162,104.68/243,040.58 = 76,668.11/x
  3. Step 3: Cross multiply
    162,104.68x = 243,040.58 × 76,668.11
  4. Step 4: Simplify right side
    162,104.68x = 18,633,461,921.90
  5. Step 5: Solve for x
    x = 18,633,461,921.90/162,104.68
  6. Step 6: Final answer
    x = 114,947.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.