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Finding the Fourth Proportional to 123,659.64, 185,503.08 and 39,400.20

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Solution

The fourth proportional to 123,659.64, 185,503.08 and 39,400.20 is: 59,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,659.64 : 185,503.08 = 39,400.20 : x
  2. Step 2: Convert to fraction form
    123,659.64/185,503.08 = 39,400.20/x
  3. Step 3: Cross multiply
    123,659.64x = 185,503.08 × 39,400.20
  4. Step 4: Simplify right side
    123,659.64x = 7,308,858,452.62
  5. Step 5: Solve for x
    x = 7,308,858,452.62/123,659.64
  6. Step 6: Final answer
    x = 59,104.64

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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.