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Finding the Fourth Proportional to 117,235.62, 161,783.02 and 66,247.27

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Solution

The fourth proportional to 117,235.62, 161,783.02 and 66,247.27 is: 91,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,235.62 : 161,783.02 = 66,247.27 : x
  2. Step 2: Convert to fraction form
    117,235.62/161,783.02 = 66,247.27/x
  3. Step 3: Cross multiply
    117,235.62x = 161,783.02 × 66,247.27
  4. Step 4: Simplify right side
    117,235.62x = 10,717,683,407.36
  5. Step 5: Solve for x
    x = 10,717,683,407.36/117,235.62
  6. Step 6: Final answer
    x = 91,420.03

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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.