Home / 149,688.39-206,576.06-81,709.95

Finding the Fourth Proportional to 149,688.39, 206,576.06 and 81,709.95

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Solution

The fourth proportional to 149,688.39, 206,576.06 and 81,709.95 is: 112,763.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,688.39 : 206,576.06 = 81,709.95 : x
  2. Step 2: Convert to fraction form
    149,688.39/206,576.06 = 81,709.95/x
  3. Step 3: Cross multiply
    149,688.39x = 206,576.06 × 81,709.95
  4. Step 4: Simplify right side
    149,688.39x = 16,879,318,705.19
  5. Step 5: Solve for x
    x = 16,879,318,705.19/149,688.39
  6. Step 6: Final answer
    x = 112,763.05

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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.