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Finding the Fourth Proportional to 173,906.90, 260,860.35 and 85,114.70

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Solution

The fourth proportional to 173,906.90, 260,860.35 and 85,114.70 is: 127,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,906.90 : 260,860.35 = 85,114.70 : x
  2. Step 2: Convert to fraction form
    173,906.90/260,860.35 = 85,114.70/x
  3. Step 3: Cross multiply
    173,906.90x = 260,860.35 × 85,114.70
  4. Step 4: Simplify right side
    173,906.90x = 22,203,050,432.15
  5. Step 5: Solve for x
    x = 22,203,050,432.15/173,906.90
  6. Step 6: Final answer
    x = 127,672.05

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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.