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Finding the Fourth Proportional to 142,608.72, 213,849.90 and 76,036.44

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Solution

The fourth proportional to 142,608.72, 213,849.90 and 76,036.44 is: 114,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,608.72 : 213,849.90 = 76,036.44 : x
  2. Step 2: Convert to fraction form
    142,608.72/213,849.90 = 76,036.44/x
  3. Step 3: Cross multiply
    142,608.72x = 213,849.90 × 76,036.44
  4. Step 4: Simplify right side
    142,608.72x = 16,260,385,090.36
  5. Step 5: Solve for x
    x = 16,260,385,090.36/142,608.72
  6. Step 6: Final answer
    x = 114,020.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.