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Finding the Fourth Proportional to 168,012.72, 251,944.80 and 89,108.88

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Solution

The fourth proportional to 168,012.72, 251,944.80 and 89,108.88 is: 133,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,012.72 : 251,944.80 = 89,108.88 : x
  2. Step 2: Convert to fraction form
    168,012.72/251,944.80 = 89,108.88/x
  3. Step 3: Cross multiply
    168,012.72x = 251,944.80 × 89,108.88
  4. Step 4: Simplify right side
    168,012.72x = 22,450,518,949.82
  5. Step 5: Solve for x
    x = 22,450,518,949.82/168,012.72
  6. Step 6: Final answer
    x = 133,623.92

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1.5x scale

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.