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Finding the Fourth Proportional to 100,166.91, 138,189.83 and 59,857.67

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Solution

The fourth proportional to 100,166.91, 138,189.83 and 59,857.67 is: 82,579.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,166.91 : 138,189.83 = 59,857.67 : x
  2. Step 2: Convert to fraction form
    100,166.91/138,189.83 = 59,857.67/x
  3. Step 3: Cross multiply
    100,166.91x = 138,189.83 × 59,857.67
  4. Step 4: Simplify right side
    100,166.91x = 8,271,720,251.26
  5. Step 5: Solve for x
    x = 8,271,720,251.26/100,166.91
  6. Step 6: Final answer
    x = 82,579.37

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1.5x scale

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.