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Finding the Fourth Proportional to 103,674.90, 155,512.35 and 70,497.30

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Solution

The fourth proportional to 103,674.90, 155,512.35 and 70,497.30 is: 105,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,674.90 : 155,512.35 = 70,497.30 : x
  2. Step 2: Convert to fraction form
    103,674.90/155,512.35 = 70,497.30/x
  3. Step 3: Cross multiply
    103,674.90x = 155,512.35 × 70,497.30
  4. Step 4: Simplify right side
    103,674.90x = 10,963,200,791.66
  5. Step 5: Solve for x
    x = 10,963,200,791.66/103,674.90
  6. Step 6: Final answer
    x = 105,745.95

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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.