Home / 142,099.18-213,148.80-71,998.54

Finding the Fourth Proportional to 142,099.18, 213,148.80 and 71,998.54

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Solution

The fourth proportional to 142,099.18, 213,148.80 and 71,998.54 is: 107,997.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,099.18 : 213,148.80 = 71,998.54 : x
  2. Step 2: Convert to fraction form
    142,099.18/213,148.80 = 71,998.54/x
  3. Step 3: Cross multiply
    142,099.18x = 213,148.80 × 71,998.54
  4. Step 4: Simplify right side
    142,099.18x = 15,346,402,402.75
  5. Step 5: Solve for x
    x = 15,346,402,402.75/142,099.18
  6. Step 6: Final answer
    x = 107,997.83

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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.