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Finding the Fourth Proportional to 169,437.50, 253,991 and 80,667.16

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Solution

The fourth proportional to 169,437.50, 253,991 and 80,667.16 is: 120,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,437.50 : 253,991 = 80,667.16 : x
  2. Step 2: Convert to fraction form
    169,437.50/253,991 = 80,667.16/x
  3. Step 3: Cross multiply
    169,437.50x = 253,991 × 80,667.16
  4. Step 4: Simplify right side
    169,437.50x = 20,488,732,635.56
  5. Step 5: Solve for x
    x = 20,488,732,635.56/169,437.50
  6. Step 6: Final answer
    x = 120,922.07

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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.