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Finding the Fourth Proportional to 131,315.62, 197,034.94 and 64,719.44

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Solution

The fourth proportional to 131,315.62, 197,034.94 and 64,719.44 is: 97,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,315.62 : 197,034.94 = 64,719.44 : x
  2. Step 2: Convert to fraction form
    131,315.62/197,034.94 = 64,719.44/x
  3. Step 3: Cross multiply
    131,315.62x = 197,034.94 × 64,719.44
  4. Step 4: Simplify right side
    131,315.62x = 12,751,990,653.64
  5. Step 5: Solve for x
    x = 12,751,990,653.64/131,315.62
  6. Step 6: Final answer
    x = 97,109.48

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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.