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Finding the Fourth Proportional to 117,187, 161,717.98 and 63,472

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Solution

The fourth proportional to 117,187, 161,717.98 and 63,472 is: 87,591.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,187 : 161,717.98 = 63,472 : x
  2. Step 2: Convert to fraction form
    117,187/161,717.98 = 63,472/x
  3. Step 3: Cross multiply
    117,187x = 161,717.98 × 63,472
  4. Step 4: Simplify right side
    117,187x = 10,264,563,626.56
  5. Step 5: Solve for x
    x = 10,264,563,626.56/117,187
  6. Step 6: Final answer
    x = 87,591.32

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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.