Home / 149,485.30-206,287.16-81,502.81

Finding the Fourth Proportional to 149,485.30, 206,287.16 and 81,502.81

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Solution

The fourth proportional to 149,485.30, 206,287.16 and 81,502.81 is: 112,472.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,485.30 : 206,287.16 = 81,502.81 : x
  2. Step 2: Convert to fraction form
    149,485.30/206,287.16 = 81,502.81/x
  3. Step 3: Cross multiply
    149,485.30x = 206,287.16 × 81,502.81
  4. Step 4: Simplify right side
    149,485.30x = 16,812,982,283.69
  5. Step 5: Solve for x
    x = 16,812,982,283.69/149,485.30
  6. Step 6: Final answer
    x = 112,472.48

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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.