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Finding the Fourth Proportional to 115,809.78, 173,744.61 and 67,818.91

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Solution

The fourth proportional to 115,809.78, 173,744.61 and 67,818.91 is: 101,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.78 : 173,744.61 = 67,818.91 : x
  2. Step 2: Convert to fraction form
    115,809.78/173,744.61 = 67,818.91/x
  3. Step 3: Cross multiply
    115,809.78x = 173,744.61 × 67,818.91
  4. Step 4: Simplify right side
    115,809.78x = 11,783,170,068.58
  5. Step 5: Solve for x
    x = 11,783,170,068.58/115,809.78
  6. Step 6: Final answer
    x = 101,745.90

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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.