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Finding the Fourth Proportional to 157,910.31, 217,926.59 and 89,016.77

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Solution

The fourth proportional to 157,910.31, 217,926.59 and 89,016.77 is: 122,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,910.31 : 217,926.59 = 89,016.77 : x
  2. Step 2: Convert to fraction form
    157,910.31/217,926.59 = 89,016.77/x
  3. Step 3: Cross multiply
    157,910.31x = 217,926.59 × 89,016.77
  4. Step 4: Simplify right side
    157,910.31x = 19,399,121,238.65
  5. Step 5: Solve for x
    x = 19,399,121,238.65/157,910.31
  6. Step 6: Final answer
    x = 122,848.98

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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.