Home / 159,143.40-219,607.20-91,160.64

Finding the Fourth Proportional to 159,143.40, 219,607.20 and 91,160.64

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Solution

The fourth proportional to 159,143.40, 219,607.20 and 91,160.64 is: 125,795.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,143.40 : 219,607.20 = 91,160.64 : x
  2. Step 2: Convert to fraction form
    159,143.40/219,607.20 = 91,160.64/x
  3. Step 3: Cross multiply
    159,143.40x = 219,607.20 × 91,160.64
  4. Step 4: Simplify right side
    159,143.40x = 20,019,532,900.61
  5. Step 5: Solve for x
    x = 20,019,532,900.61/159,143.40
  6. Step 6: Final answer
    x = 125,795.56

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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.