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Finding the Fourth Proportional to 117,256.68, 161,813.79 and 63,543

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Solution

The fourth proportional to 117,256.68, 161,813.79 and 63,543 is: 87,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,256.68 : 161,813.79 = 63,543 : x
  2. Step 2: Convert to fraction form
    117,256.68/161,813.79 = 63,543/x
  3. Step 3: Cross multiply
    117,256.68x = 161,813.79 × 63,543
  4. Step 4: Simplify right side
    117,256.68x = 10,282,133,657.97
  5. Step 5: Solve for x
    x = 10,282,133,657.97/117,256.68
  6. Step 6: Final answer
    x = 87,689.11

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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.