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Finding the Fourth Proportional to 97,920.98, 146,836.11 and 79,154.90

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Solution

The fourth proportional to 97,920.98, 146,836.11 and 79,154.90 is: 118,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,920.98 : 146,836.11 = 79,154.90 : x
  2. Step 2: Convert to fraction form
    97,920.98/146,836.11 = 79,154.90/x
  3. Step 3: Cross multiply
    97,920.98x = 146,836.11 × 79,154.90
  4. Step 4: Simplify right side
    97,920.98x = 11,622,797,603.44
  5. Step 5: Solve for x
    x = 11,622,797,603.44/97,920.98
  6. Step 6: Final answer
    x = 118,695.68

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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.