Home / 149,899.98-206,864.67-81,919.80

Finding the Fourth Proportional to 149,899.98, 206,864.67 and 81,919.80

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Solution

The fourth proportional to 149,899.98, 206,864.67 and 81,919.80 is: 113,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.98 : 206,864.67 = 81,919.80 : x
  2. Step 2: Convert to fraction form
    149,899.98/206,864.67 = 81,919.80/x
  3. Step 3: Cross multiply
    149,899.98x = 206,864.67 × 81,919.80
  4. Step 4: Simplify right side
    149,899.98x = 16,946,312,393.47
  5. Step 5: Solve for x
    x = 16,946,312,393.47/149,899.98
  6. Step 6: Final answer
    x = 113,050.80

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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.