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Finding the Fourth Proportional to 103,703.40, 155,295.90 and 68,452.20

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Solution

The fourth proportional to 103,703.40, 155,295.90 and 68,452.20 is: 102,507.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.40 : 155,295.90 = 68,452.20 : x
  2. Step 2: Convert to fraction form
    103,703.40/155,295.90 = 68,452.20/x
  3. Step 3: Cross multiply
    103,703.40x = 155,295.90 × 68,452.20
  4. Step 4: Simplify right side
    103,703.40x = 10,630,346,005.98
  5. Step 5: Solve for x
    x = 10,630,346,005.98/103,703.40
  6. Step 6: Final answer
    x = 102,507.21

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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.