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Finding the Fourth Proportional to 105,750.70, 158,640.63 and 61,398.34

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Solution

The fourth proportional to 105,750.70, 158,640.63 and 61,398.34 is: 92,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,750.70 : 158,640.63 = 61,398.34 : x
  2. Step 2: Convert to fraction form
    105,750.70/158,640.63 = 61,398.34/x
  3. Step 3: Cross multiply
    105,750.70x = 158,640.63 × 61,398.34
  4. Step 4: Simplify right side
    105,750.70x = 9,740,271,338.55
  5. Step 5: Solve for x
    x = 9,740,271,338.55/105,750.70
  6. Step 6: Final answer
    x = 92,105.98

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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.