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Finding the Fourth Proportional to 168,901.60, 253,390.80 and 98,744.80

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Solution

The fourth proportional to 168,901.60, 253,390.80 and 98,744.80 is: 148,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,901.60 : 253,390.80 = 98,744.80 : x
  2. Step 2: Convert to fraction form
    168,901.60/253,390.80 = 98,744.80/x
  3. Step 3: Cross multiply
    168,901.60x = 253,390.80 × 98,744.80
  4. Step 4: Simplify right side
    168,901.60x = 25,021,023,867.84
  5. Step 5: Solve for x
    x = 25,021,023,867.84/168,901.60
  6. Step 6: Final answer
    x = 148,139.65

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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.