Home / 113,929.12-157,211.58-66,181.78

Finding the Fourth Proportional to 113,929.12, 157,211.58 and 66,181.78

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Solution

The fourth proportional to 113,929.12, 157,211.58 and 66,181.78 is: 91,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,929.12 : 157,211.58 = 66,181.78 : x
  2. Step 2: Convert to fraction form
    113,929.12/157,211.58 = 66,181.78/x
  3. Step 3: Cross multiply
    113,929.12x = 157,211.58 × 66,181.78
  4. Step 4: Simplify right side
    113,929.12x = 10,404,542,201.01
  5. Step 5: Solve for x
    x = 10,404,542,201.01/113,929.12
  6. Step 6: Final answer
    x = 91,324.70

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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.