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Finding the Fourth Proportional to 131,855.60, 197,696.04 and 72,719.60

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Solution

The fourth proportional to 131,855.60, 197,696.04 and 72,719.60 is: 109,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,855.60 : 197,696.04 = 72,719.60 : x
  2. Step 2: Convert to fraction form
    131,855.60/197,696.04 = 72,719.60/x
  3. Step 3: Cross multiply
    131,855.60x = 197,696.04 × 72,719.60
  4. Step 4: Simplify right side
    131,855.60x = 14,376,376,950.38
  5. Step 5: Solve for x
    x = 14,376,376,950.38/131,855.60
  6. Step 6: Final answer
    x = 109,031.22

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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.