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Finding the Fourth Proportional to 185,679, 278,473.68 and 85,743.12

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Solution

The fourth proportional to 185,679, 278,473.68 and 85,743.12 is: 128,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,679 : 278,473.68 = 85,743.12 : x
  2. Step 2: Convert to fraction form
    185,679/278,473.68 = 85,743.12/x
  3. Step 3: Cross multiply
    185,679x = 278,473.68 × 85,743.12
  4. Step 4: Simplify right side
    185,679x = 23,877,202,161.08
  5. Step 5: Solve for x
    x = 23,877,202,161.08/185,679
  6. Step 6: Final answer
    x = 128,593.98

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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.