Home / 160,640.20-221,684.78-89,021.40

Finding the Fourth Proportional to 160,640.20, 221,684.78 and 89,021.40

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Solution

The fourth proportional to 160,640.20, 221,684.78 and 89,021.40 is: 122,850.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,640.20 : 221,684.78 = 89,021.40 : x
  2. Step 2: Convert to fraction form
    160,640.20/221,684.78 = 89,021.40/x
  3. Step 3: Cross multiply
    160,640.20x = 221,684.78 × 89,021.40
  4. Step 4: Simplify right side
    160,640.20x = 19,734,689,474.29
  5. Step 5: Solve for x
    x = 19,734,689,474.29/160,640.20
  6. Step 6: Final answer
    x = 122,850.25

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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.