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Finding the Fourth Proportional to 158,893.59, 238,336.74 and 79,986.63

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Solution

The fourth proportional to 158,893.59, 238,336.74 and 79,986.63 is: 119,978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,893.59 : 238,336.74 = 79,986.63 : x
  2. Step 2: Convert to fraction form
    158,893.59/238,336.74 = 79,986.63/x
  3. Step 3: Cross multiply
    158,893.59x = 238,336.74 × 79,986.63
  4. Step 4: Simplify right side
    158,893.59x = 19,063,752,637.79
  5. Step 5: Solve for x
    x = 19,063,752,637.79/158,893.59
  6. Step 6: Final answer
    x = 119,978.11

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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.