Home / 113,438.92-156,588.42-85,226.08

Finding the Fourth Proportional to 113,438.92, 156,588.42 and 85,226.08

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Solution

The fourth proportional to 113,438.92, 156,588.42 and 85,226.08 is: 117,644.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,438.92 : 156,588.42 = 85,226.08 : x
  2. Step 2: Convert to fraction form
    113,438.92/156,588.42 = 85,226.08/x
  3. Step 3: Cross multiply
    113,438.92x = 156,588.42 × 85,226.08
  4. Step 4: Simplify right side
    113,438.92x = 13,345,417,209.99
  5. Step 5: Solve for x
    x = 13,345,417,209.99/113,438.92
  6. Step 6: Final answer
    x = 117,644.08

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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.