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Finding the Fourth Proportional to 99,476.58, 137,137.11 and 71,133.06

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Solution

The fourth proportional to 99,476.58, 137,137.11 and 71,133.06 is: 98,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,476.58 : 137,137.11 = 71,133.06 : x
  2. Step 2: Convert to fraction form
    99,476.58/137,137.11 = 71,133.06/x
  3. Step 3: Cross multiply
    99,476.58x = 137,137.11 × 71,133.06
  4. Step 4: Simplify right side
    99,476.58x = 9,754,982,273.86
  5. Step 5: Solve for x
    x = 9,754,982,273.86/99,476.58
  6. Step 6: Final answer
    x = 98,063.10

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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.