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Finding the Fourth Proportional to 138,996.52, 191,814.40 and 75,334.32

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Solution

The fourth proportional to 138,996.52, 191,814.40 and 75,334.32 is: 103,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,996.52 : 191,814.40 = 75,334.32 : x
  2. Step 2: Convert to fraction form
    138,996.52/191,814.40 = 75,334.32/x
  3. Step 3: Cross multiply
    138,996.52x = 191,814.40 × 75,334.32
  4. Step 4: Simplify right side
    138,996.52x = 14,450,207,390.21
  5. Step 5: Solve for x
    x = 14,450,207,390.21/138,996.52
  6. Step 6: Final answer
    x = 103,960.93

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1.5x scale

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.