Home / 81,236.41-111,857.03-71,108.17

Finding the Fourth Proportional to 81,236.41, 111,857.03 and 71,108.17

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Solution

The fourth proportional to 81,236.41, 111,857.03 and 71,108.17 is: 97,911.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,236.41 : 111,857.03 = 71,108.17 : x
  2. Step 2: Convert to fraction form
    81,236.41/111,857.03 = 71,108.17/x
  3. Step 3: Cross multiply
    81,236.41x = 111,857.03 × 71,108.17
  4. Step 4: Simplify right side
    81,236.41x = 7,953,948,349.39
  5. Step 5: Solve for x
    x = 7,953,948,349.39/81,236.41
  6. Step 6: Final answer
    x = 97,911.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.