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Finding the Fourth Proportional to 168,637.40, 253,247.70 and 89,905.40

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Solution

The fourth proportional to 168,637.40, 253,247.70 and 89,905.40 is: 135,013.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,637.40 : 253,247.70 = 89,905.40 : x
  2. Step 2: Convert to fraction form
    168,637.40/253,247.70 = 89,905.40/x
  3. Step 3: Cross multiply
    168,637.40x = 253,247.70 × 89,905.40
  4. Step 4: Simplify right side
    168,637.40x = 22,768,335,767.58
  5. Step 5: Solve for x
    x = 22,768,335,767.58/168,637.40
  6. Step 6: Final answer
    x = 135,013.56

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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.