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Finding the Fourth Proportional to 97,819, 134,990.22 and 53,107

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Solution

The fourth proportional to 97,819, 134,990.22 and 53,107 is: 73,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,819 : 134,990.22 = 53,107 : x
  2. Step 2: Convert to fraction form
    97,819/134,990.22 = 53,107/x
  3. Step 3: Cross multiply
    97,819x = 134,990.22 × 53,107
  4. Step 4: Simplify right side
    97,819x = 7,168,925,613.54
  5. Step 5: Solve for x
    x = 7,168,925,613.54/97,819
  6. Step 6: Final answer
    x = 73,287.66

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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.