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Finding the Fourth Proportional to 100,677.48, 138,942.16 and 60,392.94

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Solution

The fourth proportional to 100,677.48, 138,942.16 and 60,392.94 is: 83,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,677.48 : 138,942.16 = 60,392.94 : x
  2. Step 2: Convert to fraction form
    100,677.48/138,942.16 = 60,392.94/x
  3. Step 3: Cross multiply
    100,677.48x = 138,942.16 × 60,392.94
  4. Step 4: Simplify right side
    100,677.48x = 8,391,125,532.35
  5. Step 5: Solve for x
    x = 8,391,125,532.35/100,677.48
  6. Step 6: Final answer
    x = 83,346.60

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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.