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Finding the Fourth Proportional to 135,999.74, 204,034.22 and 79,887.30

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Solution

The fourth proportional to 135,999.74, 204,034.22 and 79,887.30 is: 119,851.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999.74 : 204,034.22 = 79,887.30 : x
  2. Step 2: Convert to fraction form
    135,999.74/204,034.22 = 79,887.30/x
  3. Step 3: Cross multiply
    135,999.74x = 204,034.22 × 79,887.30
  4. Step 4: Simplify right side
    135,999.74x = 16,299,742,943.41
  5. Step 5: Solve for x
    x = 16,299,742,943.41/135,999.74
  6. Step 6: Final answer
    x = 119,851.28

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1.5x scale

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.