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Finding the Fourth Proportional to 102,552.40, 153,828.60 and 71,059.60

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Solution

The fourth proportional to 102,552.40, 153,828.60 and 71,059.60 is: 106,589.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,552.40 : 153,828.60 = 71,059.60 : x
  2. Step 2: Convert to fraction form
    102,552.40/153,828.60 = 71,059.60/x
  3. Step 3: Cross multiply
    102,552.40x = 153,828.60 × 71,059.60
  4. Step 4: Simplify right side
    102,552.40x = 10,930,998,784.56
  5. Step 5: Solve for x
    x = 10,930,998,784.56/102,552.40
  6. Step 6: Final answer
    x = 106,589.40

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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.