Home / 85,142.64-127,517.10-82,190.19

Finding the Fourth Proportional to 85,142.64, 127,517.10 and 82,190.19

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Solution

The fourth proportional to 85,142.64, 127,517.10 and 82,190.19 is: 123,095.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142.64 : 127,517.10 = 82,190.19 : x
  2. Step 2: Convert to fraction form
    85,142.64/127,517.10 = 82,190.19/x
  3. Step 3: Cross multiply
    85,142.64x = 127,517.10 × 82,190.19
  4. Step 4: Simplify right side
    85,142.64x = 10,480,654,677.25
  5. Step 5: Solve for x
    x = 10,480,654,677.25/85,142.64
  6. Step 6: Final answer
    x = 123,095.25

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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.