Home / 144,912.60-217,466.10-85,685.40

Finding the Fourth Proportional to 144,912.60, 217,466.10 and 85,685.40

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Solution

The fourth proportional to 144,912.60, 217,466.10 and 85,685.40 is: 128,585.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,912.60 : 217,466.10 = 85,685.40 : x
  2. Step 2: Convert to fraction form
    144,912.60/217,466.10 = 85,685.40/x
  3. Step 3: Cross multiply
    144,912.60x = 217,466.10 × 85,685.40
  4. Step 4: Simplify right side
    144,912.60x = 18,633,669,764.94
  5. Step 5: Solve for x
    x = 18,633,669,764.94/144,912.60
  6. Step 6: Final answer
    x = 128,585.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.