Home / 149,493.12-206,302.11-81,509.52

Finding the Fourth Proportional to 149,493.12, 206,302.11 and 81,509.52

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Solution

The fourth proportional to 149,493.12, 206,302.11 and 81,509.52 is: 112,484.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,493.12 : 206,302.11 = 81,509.52 : x
  2. Step 2: Convert to fraction form
    149,493.12/206,302.11 = 81,509.52/x
  3. Step 3: Cross multiply
    149,493.12x = 206,302.11 × 81,509.52
  4. Step 4: Simplify right side
    149,493.12x = 16,815,585,961.09
  5. Step 5: Solve for x
    x = 16,815,585,961.09/149,493.12
  6. Step 6: Final answer
    x = 112,484.01

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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.