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Finding the Fourth Proportional to 103,358.10, 155,000.70 and 36,800.40

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Solution

The fourth proportional to 103,358.10, 155,000.70 and 36,800.40 is: 55,187.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,358.10 : 155,000.70 = 36,800.40 : x
  2. Step 2: Convert to fraction form
    103,358.10/155,000.70 = 36,800.40/x
  3. Step 3: Cross multiply
    103,358.10x = 155,000.70 × 36,800.40
  4. Step 4: Simplify right side
    103,358.10x = 5,704,087,760.28
  5. Step 5: Solve for x
    x = 5,704,087,760.28/103,358.10
  6. Step 6: Final answer
    x = 55,187.62

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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.