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Finding the Fourth Proportional to 109,487.72, 151,093.16 and 64,156.68

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Solution

The fourth proportional to 109,487.72, 151,093.16 and 64,156.68 is: 88,536.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,487.72 : 151,093.16 = 64,156.68 : x
  2. Step 2: Convert to fraction form
    109,487.72/151,093.16 = 64,156.68/x
  3. Step 3: Cross multiply
    109,487.72x = 151,093.16 × 64,156.68
  4. Step 4: Simplify right side
    109,487.72x = 9,693,635,195.53
  5. Step 5: Solve for x
    x = 9,693,635,195.53/109,487.72
  6. Step 6: Final answer
    x = 88,536.28

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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.