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Finding the Fourth Proportional to 138,056.40, 207,084.60 and 132,807.60

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Solution

The fourth proportional to 138,056.40, 207,084.60 and 132,807.60 is: 199,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,056.40 : 207,084.60 = 132,807.60 : x
  2. Step 2: Convert to fraction form
    138,056.40/207,084.60 = 132,807.60/x
  3. Step 3: Cross multiply
    138,056.40x = 207,084.60 × 132,807.60
  4. Step 4: Simplify right side
    138,056.40x = 27,502,408,722.96
  5. Step 5: Solve for x
    x = 27,502,408,722.96/138,056.40
  6. Step 6: Final answer
    x = 199,211.40

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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.