Home / 131,809.71-181,896.30-71,378.85

Finding the Fourth Proportional to 131,809.71, 181,896.30 and 71,378.85

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Solution

The fourth proportional to 131,809.71, 181,896.30 and 71,378.85 is: 98,502.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.71 : 181,896.30 = 71,378.85 : x
  2. Step 2: Convert to fraction form
    131,809.71/181,896.30 = 71,378.85/x
  3. Step 3: Cross multiply
    131,809.71x = 181,896.30 × 71,378.85
  4. Step 4: Simplify right side
    131,809.71x = 12,983,548,713.26
  5. Step 5: Solve for x
    x = 12,983,548,713.26/131,809.71
  6. Step 6: Final answer
    x = 98,502.22

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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.