Home / 149,766.56-206,678.28-81,784.16

Finding the Fourth Proportional to 149,766.56, 206,678.28 and 81,784.16

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Solution

The fourth proportional to 149,766.56, 206,678.28 and 81,784.16 is: 112,862.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,766.56 : 206,678.28 = 81,784.16 : x
  2. Step 2: Convert to fraction form
    149,766.56/206,678.28 = 81,784.16/x
  3. Step 3: Cross multiply
    149,766.56x = 206,678.28 × 81,784.16
  4. Step 4: Simplify right side
    149,766.56x = 16,903,009,520.04
  5. Step 5: Solve for x
    x = 16,903,009,520.04/149,766.56
  6. Step 6: Final answer
    x = 112,862.37

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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.