Home / 105,815.66-158,721.75-42,634.25

Finding the Fourth Proportional to 105,815.66, 158,721.75 and 42,634.25

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Solution

The fourth proportional to 105,815.66, 158,721.75 and 42,634.25 is: 63,950.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,815.66 : 158,721.75 = 42,634.25 : x
  2. Step 2: Convert to fraction form
    105,815.66/158,721.75 = 42,634.25/x
  3. Step 3: Cross multiply
    105,815.66x = 158,721.75 × 42,634.25
  4. Step 4: Simplify right side
    105,815.66x = 6,766,982,769.94
  5. Step 5: Solve for x
    x = 6,766,982,769.94/105,815.66
  6. Step 6: Final answer
    x = 63,950.67

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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.