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Finding the Fourth Proportional to 103,805.90, 143,222.50 and 58,468.04

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Solution

The fourth proportional to 103,805.90, 143,222.50 and 58,468.04 is: 80,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,805.90 : 143,222.50 = 58,468.04 : x
  2. Step 2: Convert to fraction form
    103,805.90/143,222.50 = 58,468.04/x
  3. Step 3: Cross multiply
    103,805.90x = 143,222.50 × 58,468.04
  4. Step 4: Simplify right side
    103,805.90x = 8,373,937,996.62
  5. Step 5: Solve for x
    x = 8,373,937,996.62/103,805.90
  6. Step 6: Final answer
    x = 80,669.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.