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Finding the Fourth Proportional to 142,419.92, 213,627.54 and 58,161.56

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Solution

The fourth proportional to 142,419.92, 213,627.54 and 58,161.56 is: 87,241.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,419.92 : 213,627.54 = 58,161.56 : x
  2. Step 2: Convert to fraction form
    142,419.92/213,627.54 = 58,161.56/x
  3. Step 3: Cross multiply
    142,419.92x = 213,627.54 × 58,161.56
  4. Step 4: Simplify right side
    142,419.92x = 12,424,910,985.36
  5. Step 5: Solve for x
    x = 12,424,910,985.36/142,419.92
  6. Step 6: Final answer
    x = 87,241.38

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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.