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Finding the Fourth Proportional to 103,500.69, 155,311.28 and 43,524.83

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Solution

The fourth proportional to 103,500.69, 155,311.28 and 43,524.83 is: 65,312.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,500.69 : 155,311.28 = 43,524.83 : x
  2. Step 2: Convert to fraction form
    103,500.69/155,311.28 = 43,524.83/x
  3. Step 3: Cross multiply
    103,500.69x = 155,311.28 × 43,524.83
  4. Step 4: Simplify right side
    103,500.69x = 6,759,896,064.90
  5. Step 5: Solve for x
    x = 6,759,896,064.90/103,500.69
  6. Step 6: Final answer
    x = 65,312.57

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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.