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Finding the Fourth Proportional to 132,890, 183,432.62 and 79,191.86

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Solution

The fourth proportional to 132,890, 183,432.62 and 79,191.86 is: 109,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,890 : 183,432.62 = 79,191.86 : x
  2. Step 2: Convert to fraction form
    132,890/183,432.62 = 79,191.86/x
  3. Step 3: Cross multiply
    132,890x = 183,432.62 × 79,191.86
  4. Step 4: Simplify right side
    132,890x = 14,526,370,362.47
  5. Step 5: Solve for x
    x = 14,526,370,362.47/132,890
  6. Step 6: Final answer
    x = 109,311.24

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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.