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Finding the Fourth Proportional to 146,206.69, 201,765.87 and 79,138.69

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Solution

The fourth proportional to 146,206.69, 201,765.87 and 79,138.69 is: 109,211.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,206.69 : 201,765.87 = 79,138.69 : x
  2. Step 2: Convert to fraction form
    146,206.69/201,765.87 = 79,138.69/x
  3. Step 3: Cross multiply
    146,206.69x = 201,765.87 × 79,138.69
  4. Step 4: Simplify right side
    146,206.69x = 15,967,486,134.10
  5. Step 5: Solve for x
    x = 15,967,486,134.10/146,206.69
  6. Step 6: Final answer
    x = 109,211.74

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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.