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Finding the Fourth Proportional to 108,697.53, 149,933.56 and 78,527.19

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Solution

The fourth proportional to 108,697.53, 149,933.56 and 78,527.19 is: 108,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,697.53 : 149,933.56 = 78,527.19 : x
  2. Step 2: Convert to fraction form
    108,697.53/149,933.56 = 78,527.19/x
  3. Step 3: Cross multiply
    108,697.53x = 149,933.56 × 78,527.19
  4. Step 4: Simplify right side
    108,697.53x = 11,773,861,528.33
  5. Step 5: Solve for x
    x = 11,773,861,528.33/108,697.53
  6. Step 6: Final answer
    x = 108,317.65

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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.