Home / 149,899.47-206,863.98-81,919.32

Finding the Fourth Proportional to 149,899.47, 206,863.98 and 81,919.32

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Solution

The fourth proportional to 149,899.47, 206,863.98 and 81,919.32 is: 113,050.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.47 : 206,863.98 = 81,919.32 : x
  2. Step 2: Convert to fraction form
    149,899.47/206,863.98 = 81,919.32/x
  3. Step 3: Cross multiply
    149,899.47x = 206,863.98 × 81,919.32
  4. Step 4: Simplify right side
    149,899.47x = 16,946,156,574.09
  5. Step 5: Solve for x
    x = 16,946,156,574.09/149,899.47
  6. Step 6: Final answer
    x = 113,050.14

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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.