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Finding the Fourth Proportional to 138,955.32, 191,759.22 and 75,293.64

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Solution

The fourth proportional to 138,955.32, 191,759.22 and 75,293.64 is: 103,905.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,955.32 : 191,759.22 = 75,293.64 : x
  2. Step 2: Convert to fraction form
    138,955.32/191,759.22 = 75,293.64/x
  3. Step 3: Cross multiply
    138,955.32x = 191,759.22 × 75,293.64
  4. Step 4: Simplify right side
    138,955.32x = 14,438,249,677.36
  5. Step 5: Solve for x
    x = 14,438,249,677.36/138,955.32
  6. Step 6: Final answer
    x = 103,905.70

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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.