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Finding the Fourth Proportional to 138,756, 191,483.28 and 75,094.26

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Solution

The fourth proportional to 138,756, 191,483.28 and 75,094.26 is: 103,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,756 : 191,483.28 = 75,094.26 : x
  2. Step 2: Convert to fraction form
    138,756/191,483.28 = 75,094.26/x
  3. Step 3: Cross multiply
    138,756x = 191,483.28 × 75,094.26
  4. Step 4: Simplify right side
    138,756x = 14,379,295,213.97
  5. Step 5: Solve for x
    x = 14,379,295,213.97/138,756
  6. Step 6: Final answer
    x = 103,630.08

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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.