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Finding the Fourth Proportional to 147,171.43, 220,736.40 and 47,318.93

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Solution

The fourth proportional to 147,171.43, 220,736.40 and 47,318.93 is: 70,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,171.43 : 220,736.40 = 47,318.93 : x
  2. Step 2: Convert to fraction form
    147,171.43/220,736.40 = 47,318.93/x
  3. Step 3: Cross multiply
    147,171.43x = 220,736.40 × 47,318.93
  4. Step 4: Simplify right side
    147,171.43x = 10,445,010,260.05
  5. Step 5: Solve for x
    x = 10,445,010,260.05/147,171.43
  6. Step 6: Final answer
    x = 70,971.73

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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.