Home / 149,771.49-206,688.14-81,788.93

Finding the Fourth Proportional to 149,771.49, 206,688.14 and 81,788.93

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Solution

The fourth proportional to 149,771.49, 206,688.14 and 81,788.93 is: 112,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,771.49 : 206,688.14 = 81,788.93 : x
  2. Step 2: Convert to fraction form
    149,771.49/206,688.14 = 81,788.93/x
  3. Step 3: Cross multiply
    149,771.49x = 206,688.14 × 81,788.93
  4. Step 4: Simplify right side
    149,771.49x = 16,904,801,814.29
  5. Step 5: Solve for x
    x = 16,904,801,814.29/149,771.49
  6. Step 6: Final answer
    x = 112,870.63

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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.