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Finding the Fourth Proportional to 117,259.36, 161,817.28 and 63,543

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Solution

The fourth proportional to 117,259.36, 161,817.28 and 63,543 is: 87,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,259.36 : 161,817.28 = 63,543 : x
  2. Step 2: Convert to fraction form
    117,259.36/161,817.28 = 63,543/x
  3. Step 3: Cross multiply
    117,259.36x = 161,817.28 × 63,543
  4. Step 4: Simplify right side
    117,259.36x = 10,282,355,423.04
  5. Step 5: Solve for x
    x = 10,282,355,423.04/117,259.36
  6. Step 6: Final answer
    x = 87,688.99

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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.