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Finding the Fourth Proportional to 115,679.41, 159,677.73 and 79,500.69

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Solution

The fourth proportional to 115,679.41, 159,677.73 and 79,500.69 is: 109,738.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,679.41 : 159,677.73 = 79,500.69 : x
  2. Step 2: Convert to fraction form
    115,679.41/159,677.73 = 79,500.69/x
  3. Step 3: Cross multiply
    115,679.41x = 159,677.73 × 79,500.69
  4. Step 4: Simplify right side
    115,679.41x = 12,694,489,712.63
  5. Step 5: Solve for x
    x = 12,694,489,712.63/115,679.41
  6. Step 6: Final answer
    x = 109,738.54

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1.5x scale

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.