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Finding the Fourth Proportional to 111,452.68, 166,968.83 and 86,370.12

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Solution

The fourth proportional to 111,452.68, 166,968.83 and 86,370.12 is: 129,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,452.68 : 166,968.83 = 86,370.12 : x
  2. Step 2: Convert to fraction form
    111,452.68/166,968.83 = 86,370.12/x
  3. Step 3: Cross multiply
    111,452.68x = 166,968.83 × 86,370.12
  4. Step 4: Simplify right side
    111,452.68x = 14,421,117,889.53
  5. Step 5: Solve for x
    x = 14,421,117,889.53/111,452.68
  6. Step 6: Final answer
    x = 129,392.29

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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.