Home / 131,821.94-181,913.38-71,391.22

Finding the Fourth Proportional to 131,821.94, 181,913.38 and 71,391.22

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Solution

The fourth proportional to 131,821.94, 181,913.38 and 71,391.22 is: 98,519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,821.94 : 181,913.38 = 71,391.22 : x
  2. Step 2: Convert to fraction form
    131,821.94/181,913.38 = 71,391.22/x
  3. Step 3: Cross multiply
    131,821.94x = 181,913.38 × 71,391.22
  4. Step 4: Simplify right side
    131,821.94x = 12,987,017,499.26
  5. Step 5: Solve for x
    x = 12,987,017,499.26/131,821.94
  6. Step 6: Final answer
    x = 98,519.39

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1.5x scale

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.