Home / 106,331.40-159,351.30-86,648.40

Finding the Fourth Proportional to 106,331.40, 159,351.30 and 86,648.40

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Solution

The fourth proportional to 106,331.40, 159,351.30 and 86,648.40 is: 129,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,331.40 : 159,351.30 = 86,648.40 : x
  2. Step 2: Convert to fraction form
    106,331.40/159,351.30 = 86,648.40/x
  3. Step 3: Cross multiply
    106,331.40x = 159,351.30 × 86,648.40
  4. Step 4: Simplify right side
    106,331.40x = 13,807,535,182.92
  5. Step 5: Solve for x
    x = 13,807,535,182.92/106,331.40
  6. Step 6: Final answer
    x = 129,853.79

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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.