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Finding the Fourth Proportional to 173,638.60, 260,406.70 and 68,422.60

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Solution

The fourth proportional to 173,638.60, 260,406.70 and 68,422.60 is: 102,613.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,638.60 : 260,406.70 = 68,422.60 : x
  2. Step 2: Convert to fraction form
    173,638.60/260,406.70 = 68,422.60/x
  3. Step 3: Cross multiply
    173,638.60x = 260,406.70 × 68,422.60
  4. Step 4: Simplify right side
    173,638.60x = 17,817,703,471.42
  5. Step 5: Solve for x
    x = 17,817,703,471.42/173,638.60
  6. Step 6: Final answer
    x = 102,613.72

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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.