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Finding the Fourth Proportional to 151,456.38, 209,045.44 and 94,139

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Solution

The fourth proportional to 151,456.38, 209,045.44 and 94,139 is: 129,933.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,456.38 : 209,045.44 = 94,139 : x
  2. Step 2: Convert to fraction form
    151,456.38/209,045.44 = 94,139/x
  3. Step 3: Cross multiply
    151,456.38x = 209,045.44 × 94,139
  4. Step 4: Simplify right side
    151,456.38x = 19,679,328,676.16
  5. Step 5: Solve for x
    x = 19,679,328,676.16/151,456.38
  6. Step 6: Final answer
    x = 129,933.97

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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.