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Finding the Fourth Proportional to 138,884.63, 191,660.78 and 75,222.88

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Solution

The fourth proportional to 138,884.63, 191,660.78 and 75,222.88 is: 103,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,884.63 : 191,660.78 = 75,222.88 : x
  2. Step 2: Convert to fraction form
    138,884.63/191,660.78 = 75,222.88/x
  3. Step 3: Cross multiply
    138,884.63x = 191,660.78 × 75,222.88
  4. Step 4: Simplify right side
    138,884.63x = 14,417,275,563.55
  5. Step 5: Solve for x
    x = 14,417,275,563.55/138,884.63
  6. Step 6: Final answer
    x = 103,807.57

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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.