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Finding the Fourth Proportional to 111,468.69, 167,104.62 and 85,290.30

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Solution

The fourth proportional to 111,468.69, 167,104.62 and 85,290.30 is: 127,860.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,468.69 : 167,104.62 = 85,290.30 : x
  2. Step 2: Convert to fraction form
    111,468.69/167,104.62 = 85,290.30/x
  3. Step 3: Cross multiply
    111,468.69x = 167,104.62 × 85,290.30
  4. Step 4: Simplify right side
    111,468.69x = 14,252,403,171.19
  5. Step 5: Solve for x
    x = 14,252,403,171.19/111,468.69
  6. Step 6: Final answer
    x = 127,860.15

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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.