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Finding the Fourth Proportional to 99,873.84, 137,881.26 and 68,089.44

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Solution

The fourth proportional to 99,873.84, 137,881.26 and 68,089.44 is: 94,001.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,873.84 : 137,881.26 = 68,089.44 : x
  2. Step 2: Convert to fraction form
    99,873.84/137,881.26 = 68,089.44/x
  3. Step 3: Cross multiply
    99,873.84x = 137,881.26 × 68,089.44
  4. Step 4: Simplify right side
    99,873.84x = 9,388,257,779.89
  5. Step 5: Solve for x
    x = 9,388,257,779.89/99,873.84
  6. Step 6: Final answer
    x = 94,001.17

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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.