Home / 92,891.40-139,628.70-91,141.80

Finding the Fourth Proportional to 92,891.40, 139,628.70 and 91,141.80

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Solution

The fourth proportional to 92,891.40, 139,628.70 and 91,141.80 is: 136,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,891.40 : 139,628.70 = 91,141.80 : x
  2. Step 2: Convert to fraction form
    92,891.40/139,628.70 = 91,141.80/x
  3. Step 3: Cross multiply
    92,891.40x = 139,628.70 × 91,141.80
  4. Step 4: Simplify right side
    92,891.40x = 12,726,011,049.66
  5. Step 5: Solve for x
    x = 12,726,011,049.66/92,891.40
  6. Step 6: Final answer
    x = 136,998.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.