Home / 113,660.56-156,840.60-65,917

Finding the Fourth Proportional to 113,660.56, 156,840.60 and 65,917

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Solution

The fourth proportional to 113,660.56, 156,840.60 and 65,917 is: 90,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,660.56 : 156,840.60 = 65,917 : x
  2. Step 2: Convert to fraction form
    113,660.56/156,840.60 = 65,917/x
  3. Step 3: Cross multiply
    113,660.56x = 156,840.60 × 65,917
  4. Step 4: Simplify right side
    113,660.56x = 10,338,461,830.20
  5. Step 5: Solve for x
    x = 10,338,461,830.20/113,660.56
  6. Step 6: Final answer
    x = 90,959.10

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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.