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Finding the Fourth Proportional to 96,635.64, 144,979.38 and 76,988.28

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Solution

The fourth proportional to 96,635.64, 144,979.38 and 76,988.28 is: 115,503.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,635.64 : 144,979.38 = 76,988.28 : x
  2. Step 2: Convert to fraction form
    96,635.64/144,979.38 = 76,988.28/x
  3. Step 3: Cross multiply
    96,635.64x = 144,979.38 × 76,988.28
  4. Step 4: Simplify right side
    96,635.64x = 11,161,713,101.67
  5. Step 5: Solve for x
    x = 11,161,713,101.67/96,635.64
  6. Step 6: Final answer
    x = 115,503.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.