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Finding the Fourth Proportional to 166,763.55, 229,978.20 and 154,378.65

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Solution

The fourth proportional to 166,763.55, 229,978.20 and 154,378.65 is: 212,898.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,763.55 : 229,978.20 = 154,378.65 : x
  2. Step 2: Convert to fraction form
    166,763.55/229,978.20 = 154,378.65/x
  3. Step 3: Cross multiply
    166,763.55x = 229,978.20 × 154,378.65
  4. Step 4: Simplify right side
    166,763.55x = 35,503,724,045.43
  5. Step 5: Solve for x
    x = 35,503,724,045.43/166,763.55
  6. Step 6: Final answer
    x = 212,898.59

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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.