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Finding the Fourth Proportional to 103,296.87, 142,633.71 and 84,179.45

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Solution

The fourth proportional to 103,296.87, 142,633.71 and 84,179.45 is: 116,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,296.87 : 142,633.71 = 84,179.45 : x
  2. Step 2: Convert to fraction form
    103,296.87/142,633.71 = 84,179.45/x
  3. Step 3: Cross multiply
    103,296.87x = 142,633.71 × 84,179.45
  4. Step 4: Simplify right side
    103,296.87x = 12,006,827,615.84
  5. Step 5: Solve for x
    x = 12,006,827,615.84/103,296.87
  6. Step 6: Final answer
    x = 116,236.12

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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.