Home / 113,638.48-156,821.92-63,340.72

Finding the Fourth Proportional to 113,638.48, 156,821.92 and 63,340.72

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Solution

The fourth proportional to 113,638.48, 156,821.92 and 63,340.72 is: 87,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,638.48 : 156,821.92 = 63,340.72 : x
  2. Step 2: Convert to fraction form
    113,638.48/156,821.92 = 63,340.72/x
  3. Step 3: Cross multiply
    113,638.48x = 156,821.92 × 63,340.72
  4. Step 4: Simplify right side
    113,638.48x = 9,933,213,324.58
  5. Step 5: Solve for x
    x = 9,933,213,324.58/113,638.48
  6. Step 6: Final answer
    x = 87,410.65

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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.