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Finding the Fourth Proportional to 135,081, 202,557.85 and 78,937.27

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Solution

The fourth proportional to 135,081, 202,557.85 and 78,937.27 is: 118,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,081 : 202,557.85 = 78,937.27 : x
  2. Step 2: Convert to fraction form
    135,081/202,557.85 = 78,937.27/x
  3. Step 3: Cross multiply
    135,081x = 202,557.85 × 78,937.27
  4. Step 4: Simplify right side
    135,081x = 15,989,362,992.33
  5. Step 5: Solve for x
    x = 15,989,362,992.33/135,081
  6. Step 6: Final answer
    x = 118,368.70

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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.