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Finding the Fourth Proportional to 99,101.70, 148,652.55 and 79,418.70

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Solution

The fourth proportional to 99,101.70, 148,652.55 and 79,418.70 is: 119,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,101.70 : 148,652.55 = 79,418.70 : x
  2. Step 2: Convert to fraction form
    99,101.70/148,652.55 = 79,418.70/x
  3. Step 3: Cross multiply
    99,101.70x = 148,652.55 × 79,418.70
  4. Step 4: Simplify right side
    99,101.70x = 11,805,792,272.69
  5. Step 5: Solve for x
    x = 11,805,792,272.69/99,101.70
  6. Step 6: Final answer
    x = 119,128.05

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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.