Home / 166,138.71-229,271.36-90,687.21

Finding the Fourth Proportional to 166,138.71, 229,271.36 and 90,687.21

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Solution

The fourth proportional to 166,138.71, 229,271.36 and 90,687.21 is: 125,148.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,138.71 : 229,271.36 = 90,687.21 : x
  2. Step 2: Convert to fraction form
    166,138.71/229,271.36 = 90,687.21/x
  3. Step 3: Cross multiply
    166,138.71x = 229,271.36 × 90,687.21
  4. Step 4: Simplify right side
    166,138.71x = 20,791,979,971.31
  5. Step 5: Solve for x
    x = 20,791,979,971.31/166,138.71
  6. Step 6: Final answer
    x = 125,148.32

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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.