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Finding the Fourth Proportional to 103,616.96, 155,425.43 and 28,737.10

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Solution

The fourth proportional to 103,616.96, 155,425.43 and 28,737.10 is: 43,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.96 : 155,425.43 = 28,737.10 : x
  2. Step 2: Convert to fraction form
    103,616.96/155,425.43 = 28,737.10/x
  3. Step 3: Cross multiply
    103,616.96x = 155,425.43 × 28,737.10
  4. Step 4: Simplify right side
    103,616.96x = 4,466,476,541.79
  5. Step 5: Solve for x
    x = 4,466,476,541.79/103,616.96
  6. Step 6: Final answer
    x = 43,105.65

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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.