Home / 103,638.66-155,456.25-46,680.88

Finding the Fourth Proportional to 103,638.66, 155,456.25 and 46,680.88

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Solution

The fourth proportional to 103,638.66, 155,456.25 and 46,680.88 is: 70,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.66 : 155,456.25 = 46,680.88 : x
  2. Step 2: Convert to fraction form
    103,638.66/155,456.25 = 46,680.88/x
  3. Step 3: Cross multiply
    103,638.66x = 155,456.25 × 46,680.88
  4. Step 4: Simplify right side
    103,638.66x = 7,256,834,318.10
  5. Step 5: Solve for x
    x = 7,256,834,318.10/103,638.66
  6. Step 6: Final answer
    x = 70,020.53

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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.