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Finding the Fourth Proportional to 125,167.60, 187,749.78 and 30,398.56

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Solution

The fourth proportional to 125,167.60, 187,749.78 and 30,398.56 is: 45,597.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,167.60 : 187,749.78 = 30,398.56 : x
  2. Step 2: Convert to fraction form
    125,167.60/187,749.78 = 30,398.56/x
  3. Step 3: Cross multiply
    125,167.60x = 187,749.78 × 30,398.56
  4. Step 4: Simplify right side
    125,167.60x = 5,707,322,952.32
  5. Step 5: Solve for x
    x = 5,707,322,952.32/125,167.60
  6. Step 6: Final answer
    x = 45,597.45

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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.