Home / 85,163.83-116,675.00-81,971.49

Finding the Fourth Proportional to 85,163.83, 116,675.00 and 81,971.49

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Solution

The fourth proportional to 85,163.83, 116,675.00 and 81,971.49 is: 112,301.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,163.83 : 116,675.00 = 81,971.49 : x
  2. Step 2: Convert to fraction form
    85,163.83/116,675.00 = 81,971.49/x
  3. Step 3: Cross multiply
    85,163.83x = 116,675.00 × 81,971.49
  4. Step 4: Simplify right side
    85,163.83x = 9,564,023,844.36
  5. Step 5: Solve for x
    x = 9,564,023,844.36/85,163.83
  6. Step 6: Final answer
    x = 112,301.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.