Home / 131,684.81-181,724.82-74,336.20

Finding the Fourth Proportional to 131,684.81, 181,724.82 and 74,336.20

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Solution

The fourth proportional to 131,684.81, 181,724.82 and 74,336.20 is: 102,583.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,684.81 : 181,724.82 = 74,336.20 : x
  2. Step 2: Convert to fraction form
    131,684.81/181,724.82 = 74,336.20/x
  3. Step 3: Cross multiply
    131,684.81x = 181,724.82 × 74,336.20
  4. Step 4: Simplify right side
    131,684.81x = 13,508,731,831.41
  5. Step 5: Solve for x
    x = 13,508,731,831.41/131,684.81
  6. Step 6: Final answer
    x = 102,583.83

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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.