Home / 155,811.24-215,382.74-138,982.27

Finding the Fourth Proportional to 155,811.24, 215,382.74 and 138,982.27

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Solution

The fourth proportional to 155,811.24, 215,382.74 and 138,982.27 is: 192,119.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,811.24 : 215,382.74 = 138,982.27 : x
  2. Step 2: Convert to fraction form
    155,811.24/215,382.74 = 138,982.27/x
  3. Step 3: Cross multiply
    155,811.24x = 215,382.74 × 138,982.27
  4. Step 4: Simplify right side
    155,811.24x = 29,934,382,124.02
  5. Step 5: Solve for x
    x = 29,934,382,124.02/155,811.24
  6. Step 6: Final answer
    x = 192,119.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.