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Finding the Fourth Proportional to 159,987.56, 239,981.34 and 61,422.44

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Solution

The fourth proportional to 159,987.56, 239,981.34 and 61,422.44 is: 92,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,987.56 : 239,981.34 = 61,422.44 : x
  2. Step 2: Convert to fraction form
    159,987.56/239,981.34 = 61,422.44/x
  3. Step 3: Cross multiply
    159,987.56x = 239,981.34 × 61,422.44
  4. Step 4: Simplify right side
    159,987.56x = 14,740,239,457.27
  5. Step 5: Solve for x
    x = 14,740,239,457.27/159,987.56
  6. Step 6: Final answer
    x = 92,133.66

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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.