Home / 149,374.90-206,134.86-81,392.68

Finding the Fourth Proportional to 149,374.90, 206,134.86 and 81,392.68

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Solution

The fourth proportional to 149,374.90, 206,134.86 and 81,392.68 is: 112,320.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,374.90 : 206,134.86 = 81,392.68 : x
  2. Step 2: Convert to fraction form
    149,374.90/206,134.86 = 81,392.68/x
  3. Step 3: Cross multiply
    149,374.90x = 206,134.86 × 81,392.68
  4. Step 4: Simplify right side
    149,374.90x = 16,777,868,696.82
  5. Step 5: Solve for x
    x = 16,777,868,696.82/149,374.90
  6. Step 6: Final answer
    x = 112,320.54

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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.