Home / 142,918.83-197,221.23-79,255.26

Finding the Fourth Proportional to 142,918.83, 197,221.23 and 79,255.26

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Solution

The fourth proportional to 142,918.83, 197,221.23 and 79,255.26 is: 109,368.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,918.83 : 197,221.23 = 79,255.26 : x
  2. Step 2: Convert to fraction form
    142,918.83/197,221.23 = 79,255.26/x
  3. Step 3: Cross multiply
    142,918.83x = 197,221.23 × 79,255.26
  4. Step 4: Simplify right side
    142,918.83x = 15,630,819,861.17
  5. Step 5: Solve for x
    x = 15,630,819,861.17/142,918.83
  6. Step 6: Final answer
    x = 109,368.51

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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.