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Finding the Fourth Proportional to 115,369.92, 159,148.80 and 79,577.64

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Solution

The fourth proportional to 115,369.92, 159,148.80 and 79,577.64 is: 109,774.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,369.92 : 159,148.80 = 79,577.64 : x
  2. Step 2: Convert to fraction form
    115,369.92/159,148.80 = 79,577.64/x
  3. Step 3: Cross multiply
    115,369.92x = 159,148.80 × 79,577.64
  4. Step 4: Simplify right side
    115,369.92x = 12,664,685,912.83
  5. Step 5: Solve for x
    x = 12,664,685,912.83/115,369.92
  6. Step 6: Final answer
    x = 109,774.59

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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.