Home / 149,971.50-206,960.62-81,988.76

Finding the Fourth Proportional to 149,971.50, 206,960.62 and 81,988.76

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Solution

The fourth proportional to 149,971.50, 206,960.62 and 81,988.76 is: 113,144.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,971.50 : 206,960.62 = 81,988.76 : x
  2. Step 2: Convert to fraction form
    149,971.50/206,960.62 = 81,988.76/x
  3. Step 3: Cross multiply
    149,971.50x = 206,960.62 × 81,988.76
  4. Step 4: Simplify right side
    149,971.50x = 16,968,443,904.64
  5. Step 5: Solve for x
    x = 16,968,443,904.64/149,971.50
  6. Step 6: Final answer
    x = 113,144.46

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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.