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Finding the Fourth Proportional to 152,994.75, 211,145.72 and 85,939.71

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Solution

The fourth proportional to 152,994.75, 211,145.72 and 85,939.71 is: 118,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,994.75 : 211,145.72 = 85,939.71 : x
  2. Step 2: Convert to fraction form
    152,994.75/211,145.72 = 85,939.71/x
  3. Step 3: Cross multiply
    152,994.75x = 211,145.72 × 85,939.71
  4. Step 4: Simplify right side
    152,994.75x = 18,145,801,514.84
  5. Step 5: Solve for x
    x = 18,145,801,514.84/152,994.75
  6. Step 6: Final answer
    x = 118,604.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.