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Finding the Fourth Proportional to 162,679.20, 243,558.72 and 103,368

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Solution

The fourth proportional to 162,679.20, 243,558.72 and 103,368 is: 154,759.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,679.20 : 243,558.72 = 103,368 : x
  2. Step 2: Convert to fraction form
    162,679.20/243,558.72 = 103,368/x
  3. Step 3: Cross multiply
    162,679.20x = 243,558.72 × 103,368
  4. Step 4: Simplify right side
    162,679.20x = 25,176,177,768.96
  5. Step 5: Solve for x
    x = 25,176,177,768.96/162,679.20
  6. Step 6: Final answer
    x = 154,759.66

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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.