Home / 222,117.78-306,521.40-120,143.13

Finding the Fourth Proportional to 222,117.78, 306,521.40 and 120,143.13

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Solution

The fourth proportional to 222,117.78, 306,521.40 and 120,143.13 is: 165,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,117.78 : 306,521.40 = 120,143.13 : x
  2. Step 2: Convert to fraction form
    222,117.78/306,521.40 = 120,143.13/x
  3. Step 3: Cross multiply
    222,117.78x = 306,521.40 × 120,143.13
  4. Step 4: Simplify right side
    222,117.78x = 36,826,440,407.98
  5. Step 5: Solve for x
    x = 36,826,440,407.98/222,117.78
  6. Step 6: Final answer
    x = 165,796.90

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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.