Home / 81,631.06-122,184.15-55,190.23

Finding the Fourth Proportional to 81,631.06, 122,184.15 and 55,190.23

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Solution

The fourth proportional to 81,631.06, 122,184.15 and 55,190.23 is: 82,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,631.06 : 122,184.15 = 55,190.23 : x
  2. Step 2: Convert to fraction form
    81,631.06/122,184.15 = 55,190.23/x
  3. Step 3: Cross multiply
    81,631.06x = 122,184.15 × 55,190.23
  4. Step 4: Simplify right side
    81,631.06x = 6,743,370,828.43
  5. Step 5: Solve for x
    x = 6,743,370,828.43/81,631.06
  6. Step 6: Final answer
    x = 82,607.91

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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.