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Finding the Fourth Proportional to 105,749.70, 158,639.13 and 61,397.34

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Solution

The fourth proportional to 105,749.70, 158,639.13 and 61,397.34 is: 92,104.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,749.70 : 158,639.13 = 61,397.34 : x
  2. Step 2: Convert to fraction form
    105,749.70/158,639.13 = 61,397.34/x
  3. Step 3: Cross multiply
    105,749.70x = 158,639.13 × 61,397.34
  4. Step 4: Simplify right side
    105,749.70x = 9,740,020,601.91
  5. Step 5: Solve for x
    x = 9,740,020,601.91/105,749.70
  6. Step 6: Final answer
    x = 92,104.48

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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.