Home / 149,748.51-206,657.21-81,769.80

Finding the Fourth Proportional to 149,748.51, 206,657.21 and 81,769.80

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Solution

The fourth proportional to 149,748.51, 206,657.21 and 81,769.80 is: 112,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,748.51 : 206,657.21 = 81,769.80 : x
  2. Step 2: Convert to fraction form
    149,748.51/206,657.21 = 81,769.80/x
  3. Step 3: Cross multiply
    149,748.51x = 206,657.21 × 81,769.80
  4. Step 4: Simplify right side
    149,748.51x = 16,898,319,249.69
  5. Step 5: Solve for x
    x = 16,898,319,249.69/149,748.51
  6. Step 6: Final answer
    x = 112,844.65

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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.