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Finding the Fourth Proportional to 158,665.79, 238,060.92 and 69,857

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Solution

The fourth proportional to 158,665.79, 238,060.92 and 69,857 is: 104,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,665.79 : 238,060.92 = 69,857 : x
  2. Step 2: Convert to fraction form
    158,665.79/238,060.92 = 69,857/x
  3. Step 3: Cross multiply
    158,665.79x = 238,060.92 × 69,857
  4. Step 4: Simplify right side
    158,665.79x = 16,630,221,688.44
  5. Step 5: Solve for x
    x = 16,630,221,688.44/158,665.79
  6. Step 6: Final answer
    x = 104,812.90

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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.