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Finding the Fourth Proportional to 173,912.40, 260,868.60 and 85,179.60

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Solution

The fourth proportional to 173,912.40, 260,868.60 and 85,179.60 is: 127,769.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,912.40 : 260,868.60 = 85,179.60 : x
  2. Step 2: Convert to fraction form
    173,912.40/260,868.60 = 85,179.60/x
  3. Step 3: Cross multiply
    173,912.40x = 260,868.60 × 85,179.60
  4. Step 4: Simplify right side
    173,912.40x = 22,220,683,000.56
  5. Step 5: Solve for x
    x = 22,220,683,000.56/173,912.40
  6. Step 6: Final answer
    x = 127,769.40

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1.5x scale

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.