Home / 138,922.32-191,711.88-75,258.64

Finding the Fourth Proportional to 138,922.32, 191,711.88 and 75,258.64

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Solution

The fourth proportional to 138,922.32, 191,711.88 and 75,258.64 is: 103,856.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,922.32 : 191,711.88 = 75,258.64 : x
  2. Step 2: Convert to fraction form
    138,922.32/191,711.88 = 75,258.64/x
  3. Step 3: Cross multiply
    138,922.32x = 191,711.88 × 75,258.64
  4. Step 4: Simplify right side
    138,922.32x = 14,427,975,360.64
  5. Step 5: Solve for x
    x = 14,427,975,360.64/138,922.32
  6. Step 6: Final answer
    x = 103,856.42

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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.