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Finding the Fourth Proportional to 141.09, 211.79 and 59.99

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Solution

The fourth proportional to 141.09, 211.79 and 59.99 is: 90.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.09 : 211.79 = 59.99 : x
  2. Step 2: Convert to fraction form
    141.09/211.79 = 59.99/x
  3. Step 3: Cross multiply
    141.09x = 211.79 × 59.99
  4. Step 4: Simplify right side
    141.09x = 12,703.92
  5. Step 5: Solve for x
    x = 12,703.92/141.09
  6. Step 6: Final answer
    x = 90.04

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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.