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Finding the Fourth Proportional to 150,676.32, 207,871.04 and 86,968.96

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Solution

The fourth proportional to 150,676.32, 207,871.04 and 86,968.96 is: 119,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,676.32 : 207,871.04 = 86,968.96 : x
  2. Step 2: Convert to fraction form
    150,676.32/207,871.04 = 86,968.96/x
  3. Step 3: Cross multiply
    150,676.32x = 207,871.04 × 86,968.96
  4. Step 4: Simplify right side
    150,676.32x = 18,078,328,162.92
  5. Step 5: Solve for x
    x = 18,078,328,162.92/150,676.32
  6. Step 6: Final answer
    x = 119,981.22

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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.