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Finding the Fourth Proportional to 173,679.60, 260,519.40 and 85,106.10

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Solution

The fourth proportional to 173,679.60, 260,519.40 and 85,106.10 is: 127,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,679.60 : 260,519.40 = 85,106.10 : x
  2. Step 2: Convert to fraction form
    173,679.60/260,519.40 = 85,106.10/x
  3. Step 3: Cross multiply
    173,679.60x = 260,519.40 × 85,106.10
  4. Step 4: Simplify right side
    173,679.60x = 22,171,790,108.34
  5. Step 5: Solve for x
    x = 22,171,790,108.34/173,679.60
  6. Step 6: Final answer
    x = 127,659.15

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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.