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Finding the Fourth Proportional to 158,987.40, 238,481.10 and 119,329.80

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Solution

The fourth proportional to 158,987.40, 238,481.10 and 119,329.80 is: 178,994.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,987.40 : 238,481.10 = 119,329.80 : x
  2. Step 2: Convert to fraction form
    158,987.40/238,481.10 = 119,329.80/x
  3. Step 3: Cross multiply
    158,987.40x = 238,481.10 × 119,329.80
  4. Step 4: Simplify right side
    158,987.40x = 28,457,901,966.78
  5. Step 5: Solve for x
    x = 28,457,901,966.78/158,987.40
  6. Step 6: Final answer
    x = 178,994.70

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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.