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Finding the Fourth Proportional to 109,749.64, 151,451.41 and 64,426.90

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Solution

The fourth proportional to 109,749.64, 151,451.41 and 64,426.90 is: 88,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,749.64 : 151,451.41 = 64,426.90 : x
  2. Step 2: Convert to fraction form
    109,749.64/151,451.41 = 64,426.90/x
  3. Step 3: Cross multiply
    109,749.64x = 151,451.41 × 64,426.90
  4. Step 4: Simplify right side
    109,749.64x = 9,757,544,524.79
  5. Step 5: Solve for x
    x = 9,757,544,524.79/109,749.64
  6. Step 6: Final answer
    x = 88,907.30

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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.