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Finding the Fourth Proportional to 197,978.02, 273,138.08 and 130,031.81

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Solution

The fourth proportional to 197,978.02, 273,138.08 and 130,031.81 is: 179,396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,978.02 : 273,138.08 = 130,031.81 : x
  2. Step 2: Convert to fraction form
    197,978.02/273,138.08 = 130,031.81/x
  3. Step 3: Cross multiply
    197,978.02x = 273,138.08 × 130,031.81
  4. Step 4: Simplify right side
    197,978.02x = 35,516,637,162.54
  5. Step 5: Solve for x
    x = 35,516,637,162.54/197,978.02
  6. Step 6: Final answer
    x = 179,396.87

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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.