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Finding the Fourth Proportional to 159,012.70, 219,632.26 and 118,904.90

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Solution

The fourth proportional to 159,012.70, 219,632.26 and 118,904.90 is: 164,234.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,012.70 : 219,632.26 = 118,904.90 : x
  2. Step 2: Convert to fraction form
    159,012.70/219,632.26 = 118,904.90/x
  3. Step 3: Cross multiply
    159,012.70x = 219,632.26 × 118,904.90
  4. Step 4: Simplify right side
    159,012.70x = 26,115,351,912.07
  5. Step 5: Solve for x
    x = 26,115,351,912.07/159,012.70
  6. Step 6: Final answer
    x = 164,234.38

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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.