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Finding the Fourth Proportional to 130,306.72, 179,665.68 and 110,128

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Solution

The fourth proportional to 130,306.72, 179,665.68 and 110,128 is: 151,843.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,306.72 : 179,665.68 = 110,128 : x
  2. Step 2: Convert to fraction form
    130,306.72/179,665.68 = 110,128/x
  3. Step 3: Cross multiply
    130,306.72x = 179,665.68 × 110,128
  4. Step 4: Simplify right side
    130,306.72x = 19,786,222,007.04
  5. Step 5: Solve for x
    x = 19,786,222,007.04/130,306.72
  6. Step 6: Final answer
    x = 151,843.45

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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.