Home / 113,917.68-157,179.52-66,142.68

Finding the Fourth Proportional to 113,917.68, 157,179.52 and 66,142.68

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Solution

The fourth proportional to 113,917.68, 157,179.52 and 66,142.68 is: 91,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,917.68 : 157,179.52 = 66,142.68 : x
  2. Step 2: Convert to fraction form
    113,917.68/157,179.52 = 66,142.68/x
  3. Step 3: Cross multiply
    113,917.68x = 157,179.52 × 66,142.68
  4. Step 4: Simplify right side
    113,917.68x = 10,396,274,693.91
  5. Step 5: Solve for x
    x = 10,396,274,693.91/113,917.68
  6. Step 6: Final answer
    x = 91,261.29

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1.5x scale

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.