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Finding the Fourth Proportional to 136,875.66, 205,313.48 and 43,381.41

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Solution

The fourth proportional to 136,875.66, 205,313.48 and 43,381.41 is: 65,072.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,875.66 : 205,313.48 = 43,381.41 : x
  2. Step 2: Convert to fraction form
    136,875.66/205,313.48 = 43,381.41/x
  3. Step 3: Cross multiply
    136,875.66x = 205,313.48 × 43,381.41
  4. Step 4: Simplify right side
    136,875.66x = 8,906,787,674.27
  5. Step 5: Solve for x
    x = 8,906,787,674.27/136,875.66
  6. Step 6: Final answer
    x = 65,072.11

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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.