Home / 142,835.90-197,099.61-79,172.33

Finding the Fourth Proportional to 142,835.90, 197,099.61 and 79,172.33

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Solution

The fourth proportional to 142,835.90, 197,099.61 and 79,172.33 is: 109,250.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,835.90 : 197,099.61 = 79,172.33 : x
  2. Step 2: Convert to fraction form
    142,835.90/197,099.61 = 79,172.33/x
  3. Step 3: Cross multiply
    142,835.90x = 197,099.61 × 79,172.33
  4. Step 4: Simplify right side
    142,835.90x = 15,604,835,365.79
  5. Step 5: Solve for x
    x = 15,604,835,365.79/142,835.90
  6. Step 6: Final answer
    x = 109,250.09

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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.