Home / 149,712.32-206,599.92-81,730.64

Finding the Fourth Proportional to 149,712.32, 206,599.92 and 81,730.64

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Solution

The fourth proportional to 149,712.32, 206,599.92 and 81,730.64 is: 112,786.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,712.32 : 206,599.92 = 81,730.64 : x
  2. Step 2: Convert to fraction form
    149,712.32/206,599.92 = 81,730.64/x
  3. Step 3: Cross multiply
    149,712.32x = 206,599.92 × 81,730.64
  4. Step 4: Simplify right side
    149,712.32x = 16,885,543,895.56
  5. Step 5: Solve for x
    x = 16,885,543,895.56/149,712.32
  6. Step 6: Final answer
    x = 112,786.60

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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.