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Finding the Fourth Proportional to 103,425.30, 154,992.15 and 63,864.90

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Solution

The fourth proportional to 103,425.30, 154,992.15 and 63,864.90 is: 95,707.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,425.30 : 154,992.15 = 63,864.90 : x
  2. Step 2: Convert to fraction form
    103,425.30/154,992.15 = 63,864.90/x
  3. Step 3: Cross multiply
    103,425.30x = 154,992.15 × 63,864.90
  4. Step 4: Simplify right side
    103,425.30x = 9,898,558,160.54
  5. Step 5: Solve for x
    x = 9,898,558,160.54/103,425.30
  6. Step 6: Final answer
    x = 95,707.32

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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.