Home / 131,421.75-181,362.03-71,805.75

Finding the Fourth Proportional to 131,421.75, 181,362.03 and 71,805.75

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Solution

The fourth proportional to 131,421.75, 181,362.03 and 71,805.75 is: 99,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.75 : 181,362.03 = 71,805.75 : x
  2. Step 2: Convert to fraction form
    131,421.75/181,362.03 = 71,805.75/x
  3. Step 3: Cross multiply
    131,421.75x = 181,362.03 × 71,805.75
  4. Step 4: Simplify right side
    131,421.75x = 13,022,836,585.67
  5. Step 5: Solve for x
    x = 13,022,836,585.67/131,421.75
  6. Step 6: Final answer
    x = 99,091.94

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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.