Home / 131,809.08-181,896.48-71,380.20

Finding the Fourth Proportional to 131,809.08, 181,896.48 and 71,380.20

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Solution

The fourth proportional to 131,809.08, 181,896.48 and 71,380.20 is: 98,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.08 : 181,896.48 = 71,380.20 : x
  2. Step 2: Convert to fraction form
    131,809.08/181,896.48 = 71,380.20/x
  3. Step 3: Cross multiply
    131,809.08x = 181,896.48 × 71,380.20
  4. Step 4: Simplify right side
    131,809.08x = 12,983,807,121.70
  5. Step 5: Solve for x
    x = 12,983,807,121.70/131,809.08
  6. Step 6: Final answer
    x = 98,504.65

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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.