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Finding the Fourth Proportional to 178,896.55, 268,215.90 and 90,212.62

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Solution

The fourth proportional to 178,896.55, 268,215.90 and 90,212.62 is: 135,253.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,896.55 : 268,215.90 = 90,212.62 : x
  2. Step 2: Convert to fraction form
    178,896.55/268,215.90 = 90,212.62/x
  3. Step 3: Cross multiply
    178,896.55x = 268,215.90 × 90,212.62
  4. Step 4: Simplify right side
    178,896.55x = 24,196,459,064.66
  5. Step 5: Solve for x
    x = 24,196,459,064.66/178,896.55
  6. Step 6: Final answer
    x = 135,253.92

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1.5x scale

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.