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Finding the Fourth Proportional to 184,987.80, 278,137.80 and 156,119.40

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Solution

The fourth proportional to 184,987.80, 278,137.80 and 156,119.40 is: 234,732.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    184,987.80 : 278,137.80 = 156,119.40 : x
  2. Step 2: Convert to fraction form
    184,987.80/278,137.80 = 156,119.40/x
  3. Step 3: Cross multiply
    184,987.80x = 278,137.80 × 156,119.40
  4. Step 4: Simplify right side
    184,987.80x = 43,422,706,453.32
  5. Step 5: Solve for x
    x = 43,422,706,453.32/184,987.80
  6. Step 6: Final answer
    x = 234,732.81

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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.