Home / 90,115.74-135,166.32-52,652.43

Finding the Fourth Proportional to 90,115.74, 135,166.32 and 52,652.43

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Solution

The fourth proportional to 90,115.74, 135,166.32 and 52,652.43 is: 78,974.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,115.74 : 135,166.32 = 52,652.43 : x
  2. Step 2: Convert to fraction form
    90,115.74/135,166.32 = 52,652.43/x
  3. Step 3: Cross multiply
    90,115.74x = 135,166.32 × 52,652.43
  4. Step 4: Simplify right side
    90,115.74x = 7,116,835,202.16
  5. Step 5: Solve for x
    x = 7,116,835,202.16/90,115.74
  6. Step 6: Final answer
    x = 78,974.39

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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.