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Finding the Fourth Proportional to 141,987.85, 212,981.79 and 133,327.33

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Solution

The fourth proportional to 141,987.85, 212,981.79 and 133,327.33 is: 199,991.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,987.85 : 212,981.79 = 133,327.33 : x
  2. Step 2: Convert to fraction form
    141,987.85/212,981.79 = 133,327.33/x
  3. Step 3: Cross multiply
    141,987.85x = 212,981.79 × 133,327.33
  4. Step 4: Simplify right side
    141,987.85x = 28,396,293,399.32
  5. Step 5: Solve for x
    x = 28,396,293,399.32/141,987.85
  6. Step 6: Final answer
    x = 199,991.01

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1.5x scale

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.