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Finding the Fourth Proportional to 154,446.70, 213,133.73 and 85,534.73

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Solution

The fourth proportional to 154,446.70, 213,133.73 and 85,534.73 is: 118,036.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,446.70 : 213,133.73 = 85,534.73 : x
  2. Step 2: Convert to fraction form
    154,446.70/213,133.73 = 85,534.73/x
  3. Step 3: Cross multiply
    154,446.70x = 213,133.73 × 85,534.73
  4. Step 4: Simplify right side
    154,446.70x = 18,230,336,154.60
  5. Step 5: Solve for x
    x = 18,230,336,154.60/154,446.70
  6. Step 6: Final answer
    x = 118,036.43

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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.