Home / 111,489.82-153,877.18-66,192.64

Finding the Fourth Proportional to 111,489.82, 153,877.18 and 66,192.64

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Solution

The fourth proportional to 111,489.82, 153,877.18 and 66,192.64 is: 91,358.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,489.82 : 153,877.18 = 66,192.64 : x
  2. Step 2: Convert to fraction form
    111,489.82/153,877.18 = 66,192.64/x
  3. Step 3: Cross multiply
    111,489.82x = 153,877.18 × 66,192.64
  4. Step 4: Simplify right side
    111,489.82x = 10,185,536,779.96
  5. Step 5: Solve for x
    x = 10,185,536,779.96/111,489.82
  6. Step 6: Final answer
    x = 91,358.45

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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.