Home / 136,545.94-188,434.23-76,120.41

Finding the Fourth Proportional to 136,545.94, 188,434.23 and 76,120.41

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Solution

The fourth proportional to 136,545.94, 188,434.23 and 76,120.41 is: 105,046.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,545.94 : 188,434.23 = 76,120.41 : x
  2. Step 2: Convert to fraction form
    136,545.94/188,434.23 = 76,120.41/x
  3. Step 3: Cross multiply
    136,545.94x = 188,434.23 × 76,120.41
  4. Step 4: Simplify right side
    136,545.94x = 14,343,691,426.06
  5. Step 5: Solve for x
    x = 14,343,691,426.06/136,545.94
  6. Step 6: Final answer
    x = 105,046.63

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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.