Home / 131,809.41-181,896.07-71,378.67

Finding the Fourth Proportional to 131,809.41, 181,896.07 and 71,378.67

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Solution

The fourth proportional to 131,809.41, 181,896.07 and 71,378.67 is: 98,502.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.41 : 181,896.07 = 71,378.67 : x
  2. Step 2: Convert to fraction form
    131,809.41/181,896.07 = 71,378.67/x
  3. Step 3: Cross multiply
    131,809.41x = 181,896.07 × 71,378.67
  4. Step 4: Simplify right side
    131,809.41x = 12,983,499,554.83
  5. Step 5: Solve for x
    x = 12,983,499,554.83/131,809.41
  6. Step 6: Final answer
    x = 98,502.07

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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.