Home / 166,139.21-229,272.05-90,687.71

Finding the Fourth Proportional to 166,139.21, 229,272.05 and 90,687.71

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Solution

The fourth proportional to 166,139.21, 229,272.05 and 90,687.71 is: 125,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,139.21 : 229,272.05 = 90,687.71 : x
  2. Step 2: Convert to fraction form
    166,139.21/229,272.05 = 90,687.71/x
  3. Step 3: Cross multiply
    166,139.21x = 229,272.05 × 90,687.71
  4. Step 4: Simplify right side
    166,139.21x = 20,792,157,981.40
  5. Step 5: Solve for x
    x = 20,792,157,981.40/166,139.21
  6. Step 6: Final answer
    x = 125,149.01

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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.