Home / 81,237.16-111,858.06-71,108.92

Finding the Fourth Proportional to 81,237.16, 111,858.06 and 71,108.92

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Solution

The fourth proportional to 81,237.16, 111,858.06 and 71,108.92 is: 97,912.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,237.16 : 111,858.06 = 71,108.92 : x
  2. Step 2: Convert to fraction form
    81,237.16/111,858.06 = 71,108.92/x
  3. Step 3: Cross multiply
    81,237.16x = 111,858.06 × 71,108.92
  4. Step 4: Simplify right side
    81,237.16x = 7,954,105,839.90
  5. Step 5: Solve for x
    x = 7,954,105,839.90/81,237.16
  6. Step 6: Final answer
    x = 97,912.16

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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.