Home / 123,986.10-185,979.15-40,869.30

Finding the Fourth Proportional to 123,986.10, 185,979.15 and 40,869.30

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Solution

The fourth proportional to 123,986.10, 185,979.15 and 40,869.30 is: 61,303.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,986.10 : 185,979.15 = 40,869.30 : x
  2. Step 2: Convert to fraction form
    123,986.10/185,979.15 = 40,869.30/x
  3. Step 3: Cross multiply
    123,986.10x = 185,979.15 × 40,869.30
  4. Step 4: Simplify right side
    123,986.10x = 7,600,837,675.10
  5. Step 5: Solve for x
    x = 7,600,837,675.10/123,986.10
  6. Step 6: Final answer
    x = 61,303.95

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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.