Home / 101,825.15-140,665.29-81,381.04

Finding the Fourth Proportional to 101,825.15, 140,665.29 and 81,381.04

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Solution

The fourth proportional to 101,825.15, 140,665.29 and 81,381.04 is: 112,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,825.15 : 140,665.29 = 81,381.04 : x
  2. Step 2: Convert to fraction form
    101,825.15/140,665.29 = 81,381.04/x
  3. Step 3: Cross multiply
    101,825.15x = 140,665.29 × 81,381.04
  4. Step 4: Simplify right side
    101,825.15x = 11,447,486,935.26
  5. Step 5: Solve for x
    x = 11,447,486,935.26/101,825.15
  6. Step 6: Final answer
    x = 112,422.98

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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.