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Finding the Fourth Proportional to 103,616.15, 155,165.02 and 82,880.15

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Solution

The fourth proportional to 103,616.15, 155,165.02 and 82,880.15 is: 124,112.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.15 : 155,165.02 = 82,880.15 : x
  2. Step 2: Convert to fraction form
    103,616.15/155,165.02 = 82,880.15/x
  3. Step 3: Cross multiply
    103,616.15x = 155,165.02 × 82,880.15
  4. Step 4: Simplify right side
    103,616.15x = 12,860,100,132.35
  5. Step 5: Solve for x
    x = 12,860,100,132.35/103,616.15
  6. Step 6: Final answer
    x = 124,112.89

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1.5x scale

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.