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Finding the Fourth Proportional to 173,869.70, 260,977.35 and 85,223.30

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Solution

The fourth proportional to 173,869.70, 260,977.35 and 85,223.30 is: 127,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,869.70 : 260,977.35 = 85,223.30 : x
  2. Step 2: Convert to fraction form
    173,869.70/260,977.35 = 85,223.30/x
  3. Step 3: Cross multiply
    173,869.70x = 260,977.35 × 85,223.30
  4. Step 4: Simplify right side
    173,869.70x = 22,241,350,992.26
  5. Step 5: Solve for x
    x = 22,241,350,992.26/173,869.70
  6. Step 6: Final answer
    x = 127,919.65

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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.