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Finding the Fourth Proportional to 155,987.68, 234,006 and 67,266.40

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Solution

The fourth proportional to 155,987.68, 234,006 and 67,266.40 is: 100,910.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,987.68 : 234,006 = 67,266.40 : x
  2. Step 2: Convert to fraction form
    155,987.68/234,006 = 67,266.40/x
  3. Step 3: Cross multiply
    155,987.68x = 234,006 × 67,266.40
  4. Step 4: Simplify right side
    155,987.68x = 15,740,741,198.40
  5. Step 5: Solve for x
    x = 15,740,741,198.40/155,987.68
  6. Step 6: Final answer
    x = 100,910.16

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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.