Home / 81,415.24-122,140.39-25,254.22

Finding the Fourth Proportional to 81,415.24, 122,140.39 and 25,254.22

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Solution

The fourth proportional to 81,415.24, 122,140.39 and 25,254.22 is: 37,886.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,415.24 : 122,140.39 = 25,254.22 : x
  2. Step 2: Convert to fraction form
    81,415.24/122,140.39 = 25,254.22/x
  3. Step 3: Cross multiply
    81,415.24x = 122,140.39 × 25,254.22
  4. Step 4: Simplify right side
    81,415.24x = 3,084,560,279.95
  5. Step 5: Solve for x
    x = 3,084,560,279.95/81,415.24
  6. Step 6: Final answer
    x = 37,886.77

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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.