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Finding the Fourth Proportional to 79,515.60, 119,273.40 and 76,102.80

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Solution

The fourth proportional to 79,515.60, 119,273.40 and 76,102.80 is: 114,154.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,515.60 : 119,273.40 = 76,102.80 : x
  2. Step 2: Convert to fraction form
    79,515.60/119,273.40 = 76,102.80/x
  3. Step 3: Cross multiply
    79,515.60x = 119,273.40 × 76,102.80
  4. Step 4: Simplify right side
    79,515.60x = 9,077,039,705.52
  5. Step 5: Solve for x
    x = 9,077,039,705.52/79,515.60
  6. Step 6: Final answer
    x = 114,154.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.