Home / 128,451.72-192,726.18-49,570.68

Finding the Fourth Proportional to 128,451.72, 192,726.18 and 49,570.68

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Solution

The fourth proportional to 128,451.72, 192,726.18 and 49,570.68 is: 74,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,451.72 : 192,726.18 = 49,570.68 : x
  2. Step 2: Convert to fraction form
    128,451.72/192,726.18 = 49,570.68/x
  3. Step 3: Cross multiply
    128,451.72x = 192,726.18 × 49,570.68
  4. Step 4: Simplify right side
    128,451.72x = 9,553,567,796.40
  5. Step 5: Solve for x
    x = 9,553,567,796.40/128,451.72
  6. Step 6: Final answer
    x = 74,374.78

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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.