Home / 133,398.72-184,067.36-79,705.28

Finding the Fourth Proportional to 133,398.72, 184,067.36 and 79,705.28

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Solution

The fourth proportional to 133,398.72, 184,067.36 and 79,705.28 is: 109,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,398.72 : 184,067.36 = 79,705.28 : x
  2. Step 2: Convert to fraction form
    133,398.72/184,067.36 = 79,705.28/x
  3. Step 3: Cross multiply
    133,398.72x = 184,067.36 × 79,705.28
  4. Step 4: Simplify right side
    133,398.72x = 14,671,140,467.66
  5. Step 5: Solve for x
    x = 14,671,140,467.66/133,398.72
  6. Step 6: Final answer
    x = 109,979.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.