Home / 138,584.64-191,246.88-74,922.90

Finding the Fourth Proportional to 138,584.64, 191,246.88 and 74,922.90

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Solution

The fourth proportional to 138,584.64, 191,246.88 and 74,922.90 is: 103,393.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,584.64 : 191,246.88 = 74,922.90 : x
  2. Step 2: Convert to fraction form
    138,584.64/191,246.88 = 74,922.90/x
  3. Step 3: Cross multiply
    138,584.64x = 191,246.88 × 74,922.90
  4. Step 4: Simplify right side
    138,584.64x = 14,328,770,865.55
  5. Step 5: Solve for x
    x = 14,328,770,865.55/138,584.64
  6. Step 6: Final answer
    x = 103,393.64

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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.