Home / 82,141.08-122,617.41-72,176.60

Finding the Fourth Proportional to 82,141.08, 122,617.41 and 72,176.60

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Solution

The fourth proportional to 82,141.08, 122,617.41 and 72,176.60 is: 107,742.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,141.08 : 122,617.41 = 72,176.60 : x
  2. Step 2: Convert to fraction form
    82,141.08/122,617.41 = 72,176.60/x
  3. Step 3: Cross multiply
    82,141.08x = 122,617.41 × 72,176.60
  4. Step 4: Simplify right side
    82,141.08x = 8,850,107,754.61
  5. Step 5: Solve for x
    x = 8,850,107,754.61/82,141.08
  6. Step 6: Final answer
    x = 107,742.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.