Home / 149,365.85-206,122.28-81,383.39

Finding the Fourth Proportional to 149,365.85, 206,122.28 and 81,383.39

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Solution

The fourth proportional to 149,365.85, 206,122.28 and 81,383.39 is: 112,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,365.85 : 206,122.28 = 81,383.39 : x
  2. Step 2: Convert to fraction form
    149,365.85/206,122.28 = 81,383.39/x
  3. Step 3: Cross multiply
    149,365.85x = 206,122.28 × 81,383.39
  4. Step 4: Simplify right side
    149,365.85x = 16,774,928,870.32
  5. Step 5: Solve for x
    x = 16,774,928,870.32/149,365.85
  6. Step 6: Final answer
    x = 112,307.66

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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.