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Finding the Fourth Proportional to 142,168.68, 213,181.74 and 47,365.56

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Solution

The fourth proportional to 142,168.68, 213,181.74 and 47,365.56 is: 71,024.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,168.68 : 213,181.74 = 47,365.56 : x
  2. Step 2: Convert to fraction form
    142,168.68/213,181.74 = 47,365.56/x
  3. Step 3: Cross multiply
    142,168.68x = 213,181.74 × 47,365.56
  4. Step 4: Simplify right side
    142,168.68x = 10,097,472,496.87
  5. Step 5: Solve for x
    x = 10,097,472,496.87/142,168.68
  6. Step 6: Final answer
    x = 71,024.59

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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.