Home / 105,319.11-157,963.09-38,743.67

Finding the Fourth Proportional to 105,319.11, 157,963.09 and 38,743.67

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Solution

The fourth proportional to 105,319.11, 157,963.09 and 38,743.67 is: 58,109.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,319.11 : 157,963.09 = 38,743.67 : x
  2. Step 2: Convert to fraction form
    105,319.11/157,963.09 = 38,743.67/x
  3. Step 3: Cross multiply
    105,319.11x = 157,963.09 × 38,743.67
  4. Step 4: Simplify right side
    105,319.11x = 6,120,070,143.15
  5. Step 5: Solve for x
    x = 6,120,070,143.15/105,319.11
  6. Step 6: Final answer
    x = 58,109.78

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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.