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Finding the Fourth Proportional to 173,910.60, 260,865.90 and 85,337.10

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Solution

The fourth proportional to 173,910.60, 260,865.90 and 85,337.10 is: 128,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,910.60 : 260,865.90 = 85,337.10 : x
  2. Step 2: Convert to fraction form
    173,910.60/260,865.90 = 85,337.10/x
  3. Step 3: Cross multiply
    173,910.60x = 260,865.90 × 85,337.10
  4. Step 4: Simplify right side
    173,910.60x = 22,261,539,394.89
  5. Step 5: Solve for x
    x = 22,261,539,394.89/173,910.60
  6. Step 6: Final answer
    x = 128,005.65

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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.