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Finding the Fourth Proportional to 131,465.92, 197,230.02 and 42,719.44

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Solution

The fourth proportional to 131,465.92, 197,230.02 and 42,719.44 is: 64,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,465.92 : 197,230.02 = 42,719.44 : x
  2. Step 2: Convert to fraction form
    131,465.92/197,230.02 = 42,719.44/x
  3. Step 3: Cross multiply
    131,465.92x = 197,230.02 × 42,719.44
  4. Step 4: Simplify right side
    131,465.92x = 8,425,556,005.59
  5. Step 5: Solve for x
    x = 8,425,556,005.59/131,465.92
  6. Step 6: Final answer
    x = 64,089.28

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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.