Home / 106,231.20-159,346.80-72,551.40

Finding the Fourth Proportional to 106,231.20, 159,346.80 and 72,551.40

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Solution

The fourth proportional to 106,231.20, 159,346.80 and 72,551.40 is: 108,827.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,231.20 : 159,346.80 = 72,551.40 : x
  2. Step 2: Convert to fraction form
    106,231.20/159,346.80 = 72,551.40/x
  3. Step 3: Cross multiply
    106,231.20x = 159,346.80 × 72,551.40
  4. Step 4: Simplify right side
    106,231.20x = 11,560,833,425.52
  5. Step 5: Solve for x
    x = 11,560,833,425.52/106,231.20
  6. Step 6: Final answer
    x = 108,827.10

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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.