Home / 149,357.55-206,112.28-81,374.32

Finding the Fourth Proportional to 149,357.55, 206,112.28 and 81,374.32

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Solution

The fourth proportional to 149,357.55, 206,112.28 and 81,374.32 is: 112,295.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,357.55 : 206,112.28 = 81,374.32 : x
  2. Step 2: Convert to fraction form
    149,357.55/206,112.28 = 81,374.32/x
  3. Step 3: Cross multiply
    149,357.55x = 206,112.28 × 81,374.32
  4. Step 4: Simplify right side
    149,357.55x = 16,772,246,215.09
  5. Step 5: Solve for x
    x = 16,772,246,215.09/149,357.55
  6. Step 6: Final answer
    x = 112,295.94

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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.