Home / 149,519.61-206,333.31-81,537.89

Finding the Fourth Proportional to 149,519.61, 206,333.31 and 81,537.89

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Solution

The fourth proportional to 149,519.61, 206,333.31 and 81,537.89 is: 112,520.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,519.61 : 206,333.31 = 81,537.89 : x
  2. Step 2: Convert to fraction form
    149,519.61/206,333.31 = 81,537.89/x
  3. Step 3: Cross multiply
    149,519.61x = 206,333.31 × 81,537.89
  4. Step 4: Simplify right side
    149,519.61x = 16,823,983,054.18
  5. Step 5: Solve for x
    x = 16,823,983,054.18/149,519.61
  6. Step 6: Final answer
    x = 112,520.25

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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.