Home / 99,107.16-148,654.98-72,480.12

Finding the Fourth Proportional to 99,107.16, 148,654.98 and 72,480.12

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Solution

The fourth proportional to 99,107.16, 148,654.98 and 72,480.12 is: 108,715.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,107.16 : 148,654.98 = 72,480.12 : x
  2. Step 2: Convert to fraction form
    99,107.16/148,654.98 = 72,480.12/x
  3. Step 3: Cross multiply
    99,107.16x = 148,654.98 × 72,480.12
  4. Step 4: Simplify right side
    99,107.16x = 10,774,530,789.00
  5. Step 5: Solve for x
    x = 10,774,530,789.00/99,107.16
  6. Step 6: Final answer
    x = 108,715.97

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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.