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Finding the Fourth Proportional to 124,145.56, 186,218.40 and 30,651.40

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Solution

The fourth proportional to 124,145.56, 186,218.40 and 30,651.40 is: 45,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,145.56 : 186,218.40 = 30,651.40 : x
  2. Step 2: Convert to fraction form
    124,145.56/186,218.40 = 30,651.40/x
  3. Step 3: Cross multiply
    124,145.56x = 186,218.40 × 30,651.40
  4. Step 4: Simplify right side
    124,145.56x = 5,707,854,665.76
  5. Step 5: Solve for x
    x = 5,707,854,665.76/124,145.56
  6. Step 6: Final answer
    x = 45,977.11

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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.