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Finding the Fourth Proportional to 158,051.81, 236,828.02 and 128,324.41

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Solution

The fourth proportional to 158,051.81, 236,828.02 and 128,324.41 is: 192,283.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,051.81 : 236,828.02 = 128,324.41 : x
  2. Step 2: Convert to fraction form
    158,051.81/236,828.02 = 128,324.41/x
  3. Step 3: Cross multiply
    158,051.81x = 236,828.02 × 128,324.41
  4. Step 4: Simplify right side
    158,051.81x = 30,390,815,937.97
  5. Step 5: Solve for x
    x = 30,390,815,937.97/158,051.81
  6. Step 6: Final answer
    x = 192,283.88

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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.