Home / 149,374.75-206,134.71-81,392.53

Finding the Fourth Proportional to 149,374.75, 206,134.71 and 81,392.53

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Solution

The fourth proportional to 149,374.75, 206,134.71 and 81,392.53 is: 112,320.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,374.75 : 206,134.71 = 81,392.53 : x
  2. Step 2: Convert to fraction form
    149,374.75/206,134.71 = 81,392.53/x
  3. Step 3: Cross multiply
    149,374.75x = 206,134.71 × 81,392.53
  4. Step 4: Simplify right side
    149,374.75x = 16,777,825,567.72
  5. Step 5: Solve for x
    x = 16,777,825,567.72/149,374.75
  6. Step 6: Final answer
    x = 112,320.36

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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.