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Finding the Fourth Proportional to 113,087.20, 169,630.80 and 102,200.80

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Solution

The fourth proportional to 113,087.20, 169,630.80 and 102,200.80 is: 153,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,087.20 : 169,630.80 = 102,200.80 : x
  2. Step 2: Convert to fraction form
    113,087.20/169,630.80 = 102,200.80/x
  3. Step 3: Cross multiply
    113,087.20x = 169,630.80 × 102,200.80
  4. Step 4: Simplify right side
    113,087.20x = 17,336,403,464.64
  5. Step 5: Solve for x
    x = 17,336,403,464.64/113,087.20
  6. Step 6: Final answer
    x = 153,301.20

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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.