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Finding the Fourth Proportional to 136,779.44, 188,754.90 and 79,432.86

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Solution

The fourth proportional to 136,779.44, 188,754.90 and 79,432.86 is: 109,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,779.44 : 188,754.90 = 79,432.86 : x
  2. Step 2: Convert to fraction form
    136,779.44/188,754.90 = 79,432.86/x
  3. Step 3: Cross multiply
    136,779.44x = 188,754.90 × 79,432.86
  4. Step 4: Simplify right side
    136,779.44x = 14,993,341,546.01
  5. Step 5: Solve for x
    x = 14,993,341,546.01/136,779.44
  6. Step 6: Final answer
    x = 109,616.93

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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.