Home / 107,943.40-149,002.89-81,163.66

Finding the Fourth Proportional to 107,943.40, 149,002.89 and 81,163.66

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Solution

The fourth proportional to 107,943.40, 149,002.89 and 81,163.66 is: 112,036.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,943.40 : 149,002.89 = 81,163.66 : x
  2. Step 2: Convert to fraction form
    107,943.40/149,002.89 = 81,163.66/x
  3. Step 3: Cross multiply
    107,943.40x = 149,002.89 × 81,163.66
  4. Step 4: Simplify right side
    107,943.40x = 12,093,619,902.98
  5. Step 5: Solve for x
    x = 12,093,619,902.98/107,943.40
  6. Step 6: Final answer
    x = 112,036.68

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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.