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Finding the Fourth Proportional to 99,875.84, 137,884.02 and 68,091.44

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Solution

The fourth proportional to 99,875.84, 137,884.02 and 68,091.44 is: 94,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,875.84 : 137,884.02 = 68,091.44 : x
  2. Step 2: Convert to fraction form
    99,875.84/137,884.02 = 68,091.44/x
  3. Step 3: Cross multiply
    99,875.84x = 137,884.02 × 68,091.44
  4. Step 4: Simplify right side
    99,875.84x = 9,388,721,474.79
  5. Step 5: Solve for x
    x = 9,388,721,474.79/99,875.84
  6. Step 6: Final answer
    x = 94,003.93

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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.