Home / 149,299.71-206,036.06-81,318

Finding the Fourth Proportional to 149,299.71, 206,036.06 and 81,318

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Solution

The fourth proportional to 149,299.71, 206,036.06 and 81,318 is: 112,220.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,299.71 : 206,036.06 = 81,318 : x
  2. Step 2: Convert to fraction form
    149,299.71/206,036.06 = 81,318/x
  3. Step 3: Cross multiply
    149,299.71x = 206,036.06 × 81,318
  4. Step 4: Simplify right side
    149,299.71x = 16,754,439,920.49
  5. Step 5: Solve for x
    x = 16,754,439,920.49/149,299.71
  6. Step 6: Final answer
    x = 112,220.18

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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.