Home / 131,239.54-196,946.16-72,116.38

Finding the Fourth Proportional to 131,239.54, 196,946.16 and 72,116.38

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Solution

The fourth proportional to 131,239.54, 196,946.16 and 72,116.38 is: 108,222.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,239.54 : 196,946.16 = 72,116.38 : x
  2. Step 2: Convert to fraction form
    131,239.54/196,946.16 = 72,116.38/x
  3. Step 3: Cross multiply
    131,239.54x = 196,946.16 × 72,116.38
  4. Step 4: Simplify right side
    131,239.54x = 14,203,044,114.10
  5. Step 5: Solve for x
    x = 14,203,044,114.10/131,239.54
  6. Step 6: Final answer
    x = 108,222.29

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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.