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Finding the Fourth Proportional to 178,459.32, 267,606.05 and 66,135

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Solution

The fourth proportional to 178,459.32, 267,606.05 and 66,135 is: 99,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,459.32 : 267,606.05 = 66,135 : x
  2. Step 2: Convert to fraction form
    178,459.32/267,606.05 = 66,135/x
  3. Step 3: Cross multiply
    178,459.32x = 267,606.05 × 66,135
  4. Step 4: Simplify right side
    178,459.32x = 17,698,125,786.08
  5. Step 5: Solve for x
    x = 17,698,125,786.08/178,459.32
  6. Step 6: Final answer
    x = 99,171.77

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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.