Home / 103,687.23-155,525.35-51,078.95

Finding the Fourth Proportional to 103,687.23, 155,525.35 and 51,078.95

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Solution

The fourth proportional to 103,687.23, 155,525.35 and 51,078.95 is: 76,615.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,687.23 : 155,525.35 = 51,078.95 : x
  2. Step 2: Convert to fraction form
    103,687.23/155,525.35 = 51,078.95/x
  3. Step 3: Cross multiply
    103,687.23x = 155,525.35 × 51,078.95
  4. Step 4: Simplify right side
    103,687.23x = 7,944,071,576.38
  5. Step 5: Solve for x
    x = 7,944,071,576.38/103,687.23
  6. Step 6: Final answer
    x = 76,615.72

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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.