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Finding the Fourth Proportional to 159,046.38, 219,484.46 and 91,064.40

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Solution

The fourth proportional to 159,046.38, 219,484.46 and 91,064.40 is: 125,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,046.38 : 219,484.46 = 91,064.40 : x
  2. Step 2: Convert to fraction form
    159,046.38/219,484.46 = 91,064.40/x
  3. Step 3: Cross multiply
    159,046.38x = 219,484.46 × 91,064.40
  4. Step 4: Simplify right side
    159,046.38x = 19,987,219,106.48
  5. Step 5: Solve for x
    x = 19,987,219,106.48/159,046.38
  6. Step 6: Final answer
    x = 125,669.13

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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.