Home / 106,871.49-159,971.90-71,262.81

Finding the Fourth Proportional to 106,871.49, 159,971.90 and 71,262.81

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Solution

The fourth proportional to 106,871.49, 159,971.90 and 71,262.81 is: 106,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,871.49 : 159,971.90 = 71,262.81 : x
  2. Step 2: Convert to fraction form
    106,871.49/159,971.90 = 71,262.81/x
  3. Step 3: Cross multiply
    106,871.49x = 159,971.90 × 71,262.81
  4. Step 4: Simplify right side
    106,871.49x = 11,400,046,758.72
  5. Step 5: Solve for x
    x = 11,400,046,758.72/106,871.49
  6. Step 6: Final answer
    x = 106,670.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.