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Finding the Fourth Proportional to 117,281, 161,846.87 and 63,564.64

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Solution

The fourth proportional to 117,281, 161,846.87 and 63,564.64 is: 87,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,281 : 161,846.87 = 63,564.64 : x
  2. Step 2: Convert to fraction form
    117,281/161,846.87 = 63,564.64/x
  3. Step 3: Cross multiply
    117,281x = 161,846.87 × 63,564.64
  4. Step 4: Simplify right side
    117,281x = 10,287,738,026.68
  5. Step 5: Solve for x
    x = 10,287,738,026.68/117,281
  6. Step 6: Final answer
    x = 87,718.71

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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.