Home / 102,181.91-140,931.15-66,383.46

Finding the Fourth Proportional to 102,181.91, 140,931.15 and 66,383.46

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Solution

The fourth proportional to 102,181.91, 140,931.15 and 66,383.46 is: 91,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,181.91 : 140,931.15 = 66,383.46 : x
  2. Step 2: Convert to fraction form
    102,181.91/140,931.15 = 66,383.46/x
  3. Step 3: Cross multiply
    102,181.91x = 140,931.15 × 66,383.46
  4. Step 4: Simplify right side
    102,181.91x = 9,355,497,358.78
  5. Step 5: Solve for x
    x = 9,355,497,358.78/102,181.91
  6. Step 6: Final answer
    x = 91,557.28

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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.