Home / 166,139.71-229,272.74-90,688.21

Finding the Fourth Proportional to 166,139.71, 229,272.74 and 90,688.21

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Solution

The fourth proportional to 166,139.71, 229,272.74 and 90,688.21 is: 125,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,139.71 : 229,272.74 = 90,688.21 : x
  2. Step 2: Convert to fraction form
    166,139.71/229,272.74 = 90,688.21/x
  3. Step 3: Cross multiply
    166,139.71x = 229,272.74 × 90,688.21
  4. Step 4: Simplify right side
    166,139.71x = 20,792,334,392.40
  5. Step 5: Solve for x
    x = 20,792,334,392.40/166,139.71
  6. Step 6: Final answer
    x = 125,149.70

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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.