Home / 216,454.18-298,720.71-120,961.42

Finding the Fourth Proportional to 216,454.18, 298,720.71 and 120,961.42

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Solution

The fourth proportional to 216,454.18, 298,720.71 and 120,961.42 is: 166,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,454.18 : 298,720.71 = 120,961.42 : x
  2. Step 2: Convert to fraction form
    216,454.18/298,720.71 = 120,961.42/x
  3. Step 3: Cross multiply
    216,454.18x = 298,720.71 × 120,961.42
  4. Step 4: Simplify right side
    216,454.18x = 36,133,681,265.01
  5. Step 5: Solve for x
    x = 36,133,681,265.01/216,454.18
  6. Step 6: Final answer
    x = 166,934.55

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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.