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Finding the Fourth Proportional to 114,250.71, 171,405.65 and 66,905.81

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Solution

The fourth proportional to 114,250.71, 171,405.65 and 66,905.81 is: 100,376.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,250.71 : 171,405.65 = 66,905.81 : x
  2. Step 2: Convert to fraction form
    114,250.71/171,405.65 = 66,905.81/x
  3. Step 3: Cross multiply
    114,250.71x = 171,405.65 × 66,905.81
  4. Step 4: Simplify right side
    114,250.71x = 11,468,033,851.83
  5. Step 5: Solve for x
    x = 11,468,033,851.83/114,250.71
  6. Step 6: Final answer
    x = 100,376.04

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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.