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Finding the Fourth Proportional to 168,908.10, 253,400.55 and 98,751.30

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Solution

The fourth proportional to 168,908.10, 253,400.55 and 98,751.30 is: 148,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,908.10 : 253,400.55 = 98,751.30 : x
  2. Step 2: Convert to fraction form
    168,908.10/253,400.55 = 98,751.30/x
  3. Step 3: Cross multiply
    168,908.10x = 253,400.55 × 98,751.30
  4. Step 4: Simplify right side
    168,908.10x = 25,023,633,733.22
  5. Step 5: Solve for x
    x = 25,023,633,733.22/168,908.10
  6. Step 6: Final answer
    x = 148,149.40

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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.