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Finding the Fourth Proportional to 91,253.88, 136,689.96 and 73,388.07

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Solution

The fourth proportional to 91,253.88, 136,689.96 and 73,388.07 is: 109,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,253.88 : 136,689.96 = 73,388.07 : x
  2. Step 2: Convert to fraction form
    91,253.88/136,689.96 = 73,388.07/x
  3. Step 3: Cross multiply
    91,253.88x = 136,689.96 × 73,388.07
  4. Step 4: Simplify right side
    91,253.88x = 10,031,411,669.33
  5. Step 5: Solve for x
    x = 10,031,411,669.33/91,253.88
  6. Step 6: Final answer
    x = 109,928.60

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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.