Home / 159,154.40-219,622.36-91,171.64

Finding the Fourth Proportional to 159,154.40, 219,622.36 and 91,171.64

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Solution

The fourth proportional to 159,154.40, 219,622.36 and 91,171.64 is: 125,810.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,154.40 : 219,622.36 = 91,171.64 : x
  2. Step 2: Convert to fraction form
    159,154.40/219,622.36 = 91,171.64/x
  3. Step 3: Cross multiply
    159,154.40x = 219,622.36 × 91,171.64
  4. Step 4: Simplify right side
    159,154.40x = 20,023,330,741.87
  5. Step 5: Solve for x
    x = 20,023,330,741.87/159,154.40
  6. Step 6: Final answer
    x = 125,810.73

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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.