Home / 149,417.82-206,190.60-81,433.35

Finding the Fourth Proportional to 149,417.82, 206,190.60 and 81,433.35

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Solution

The fourth proportional to 149,417.82, 206,190.60 and 81,433.35 is: 112,374.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,417.82 : 206,190.60 = 81,433.35 : x
  2. Step 2: Convert to fraction form
    149,417.82/206,190.60 = 81,433.35/x
  3. Step 3: Cross multiply
    149,417.82x = 206,190.60 × 81,433.35
  4. Step 4: Simplify right side
    149,417.82x = 16,790,791,296.51
  5. Step 5: Solve for x
    x = 16,790,791,296.51/149,417.82
  6. Step 6: Final answer
    x = 112,374.76

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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.