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Finding the Fourth Proportional to 173,378.50, 260,142.87 and 61,138.89

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Solution

The fourth proportional to 173,378.50, 260,142.87 and 61,138.89 is: 91,734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,378.50 : 260,142.87 = 61,138.89 : x
  2. Step 2: Convert to fraction form
    173,378.50/260,142.87 = 61,138.89/x
  3. Step 3: Cross multiply
    173,378.50x = 260,142.87 × 61,138.89
  4. Step 4: Simplify right side
    173,378.50x = 15,904,846,313.21
  5. Step 5: Solve for x
    x = 15,904,846,313.21/173,378.50
  6. Step 6: Final answer
    x = 91,734.82

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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.