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Finding the Fourth Proportional to 119,302.78, 178,564.77 and 87,704.48

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Solution

The fourth proportional to 119,302.78, 178,564.77 and 87,704.48 is: 131,270.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,302.78 : 178,564.77 = 87,704.48 : x
  2. Step 2: Convert to fraction form
    119,302.78/178,564.77 = 87,704.48/x
  3. Step 3: Cross multiply
    119,302.78x = 178,564.77 × 87,704.48
  4. Step 4: Simplify right side
    119,302.78x = 15,660,929,970.28
  5. Step 5: Solve for x
    x = 15,660,929,970.28/119,302.78
  6. Step 6: Final answer
    x = 131,270.45

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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.