Home / 142,910.16-197,220.72-79,254

Finding the Fourth Proportional to 142,910.16, 197,220.72 and 79,254

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Solution

The fourth proportional to 142,910.16, 197,220.72 and 79,254 is: 109,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,910.16 : 197,220.72 = 79,254 : x
  2. Step 2: Convert to fraction form
    142,910.16/197,220.72 = 79,254/x
  3. Step 3: Cross multiply
    142,910.16x = 197,220.72 × 79,254
  4. Step 4: Simplify right side
    142,910.16x = 15,630,530,942.88
  5. Step 5: Solve for x
    x = 15,630,530,942.88/142,910.16
  6. Step 6: Final answer
    x = 109,373.13

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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.