Home / 90,260.37-135,521.78-66,640.77

Finding the Fourth Proportional to 90,260.37, 135,521.78 and 66,640.77

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Solution

The fourth proportional to 90,260.37, 135,521.78 and 66,640.77 is: 100,058.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,260.37 : 135,521.78 = 66,640.77 : x
  2. Step 2: Convert to fraction form
    90,260.37/135,521.78 = 66,640.77/x
  3. Step 3: Cross multiply
    90,260.37x = 135,521.78 × 66,640.77
  4. Step 4: Simplify right side
    90,260.37x = 9,031,275,437.77
  5. Step 5: Solve for x
    x = 9,031,275,437.77/90,260.37
  6. Step 6: Final answer
    x = 100,058.04

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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.