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Finding the Fourth Proportional to 218,667.85, 301,767.47 and 123,168.85

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Solution

The fourth proportional to 218,667.85, 301,767.47 and 123,168.85 is: 169,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,667.85 : 301,767.47 = 123,168.85 : x
  2. Step 2: Convert to fraction form
    218,667.85/301,767.47 = 123,168.85/x
  3. Step 3: Cross multiply
    218,667.85x = 301,767.47 × 123,168.85
  4. Step 4: Simplify right side
    218,667.85x = 37,168,351,631.47
  5. Step 5: Solve for x
    x = 37,168,351,631.47/218,667.85
  6. Step 6: Final answer
    x = 169,976.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.