Home / 131,609.99-181,621.79-71,180.64

Finding the Fourth Proportional to 131,609.99, 181,621.79 and 71,180.64

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Solution

The fourth proportional to 131,609.99, 181,621.79 and 71,180.64 is: 98,229.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,609.99 : 181,621.79 = 71,180.64 : x
  2. Step 2: Convert to fraction form
    131,609.99/181,621.79 = 71,180.64/x
  3. Step 3: Cross multiply
    131,609.99x = 181,621.79 × 71,180.64
  4. Step 4: Simplify right side
    131,609.99x = 12,927,954,618.14
  5. Step 5: Solve for x
    x = 12,927,954,618.14/131,609.99
  6. Step 6: Final answer
    x = 98,229.28

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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.