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Finding the Fourth Proportional to 111,645.60, 167,468.40 and 76,216.20

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Solution

The fourth proportional to 111,645.60, 167,468.40 and 76,216.20 is: 114,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,645.60 : 167,468.40 = 76,216.20 : x
  2. Step 2: Convert to fraction form
    111,645.60/167,468.40 = 76,216.20/x
  3. Step 3: Cross multiply
    111,645.60x = 167,468.40 × 76,216.20
  4. Step 4: Simplify right side
    111,645.60x = 12,763,805,068.08
  5. Step 5: Solve for x
    x = 12,763,805,068.08/111,645.60
  6. Step 6: Final answer
    x = 114,324.30

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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.