Home / 111,219.66-167,588.45-91,930.32

Finding the Fourth Proportional to 111,219.66, 167,588.45 and 91,930.32

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Solution

The fourth proportional to 111,219.66, 167,588.45 and 91,930.32 is: 138,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,219.66 : 167,588.45 = 91,930.32 : x
  2. Step 2: Convert to fraction form
    111,219.66/167,588.45 = 91,930.32/x
  3. Step 3: Cross multiply
    111,219.66x = 167,588.45 × 91,930.32
  4. Step 4: Simplify right side
    111,219.66x = 15,406,459,836.80
  5. Step 5: Solve for x
    x = 15,406,459,836.80/111,219.66
  6. Step 6: Final answer
    x = 138,522.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.