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Finding the Fourth Proportional to 103,657.13, 155,485.65 and 28,777.27

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Solution

The fourth proportional to 103,657.13, 155,485.65 and 28,777.27 is: 43,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,657.13 : 155,485.65 = 28,777.27 : x
  2. Step 2: Convert to fraction form
    103,657.13/155,485.65 = 28,777.27/x
  3. Step 3: Cross multiply
    103,657.13x = 155,485.65 × 28,777.27
  4. Step 4: Simplify right side
    103,657.13x = 4,474,452,531.18
  5. Step 5: Solve for x
    x = 4,474,452,531.18/103,657.13
  6. Step 6: Final answer
    x = 43,165.89

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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.