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Finding the Fourth Proportional to 103,703.01, 155,428.14 and 53,755.59

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Solution

The fourth proportional to 103,703.01, 155,428.14 and 53,755.59 is: 80,567.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.01 : 155,428.14 = 53,755.59 : x
  2. Step 2: Convert to fraction form
    103,703.01/155,428.14 = 53,755.59/x
  3. Step 3: Cross multiply
    103,703.01x = 155,428.14 × 53,755.59
  4. Step 4: Simplify right side
    103,703.01x = 8,355,131,368.30
  5. Step 5: Solve for x
    x = 8,355,131,368.30/103,703.01
  6. Step 6: Final answer
    x = 80,567.88

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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.