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Finding the Fourth Proportional to 178,756.65, 268,134.66 and 45,636.87

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Solution

The fourth proportional to 178,756.65, 268,134.66 and 45,636.87 is: 68,455.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,756.65 : 268,134.66 = 45,636.87 : x
  2. Step 2: Convert to fraction form
    178,756.65/268,134.66 = 45,636.87/x
  3. Step 3: Cross multiply
    178,756.65x = 268,134.66 × 45,636.87
  4. Step 4: Simplify right side
    178,756.65x = 12,236,826,620.91
  5. Step 5: Solve for x
    x = 12,236,826,620.91/178,756.65
  6. Step 6: Final answer
    x = 68,455.22

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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.