Home / 124,520.72-186,855.19-45,640.49

Finding the Fourth Proportional to 124,520.72, 186,855.19 and 45,640.49

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Solution

The fourth proportional to 124,520.72, 186,855.19 and 45,640.49 is: 68,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,520.72 : 186,855.19 = 45,640.49 : x
  2. Step 2: Convert to fraction form
    124,520.72/186,855.19 = 45,640.49/x
  3. Step 3: Cross multiply
    124,520.72x = 186,855.19 × 45,640.49
  4. Step 4: Simplify right side
    124,520.72x = 8,528,161,382.27
  5. Step 5: Solve for x
    x = 8,528,161,382.27/124,520.72
  6. Step 6: Final answer
    x = 68,487.89

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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.