Home / 141,260.32-211,979.76-78,971.68

Finding the Fourth Proportional to 141,260.32, 211,979.76 and 78,971.68

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Solution

The fourth proportional to 141,260.32, 211,979.76 and 78,971.68 is: 118,507.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,260.32 : 211,979.76 = 78,971.68 : x
  2. Step 2: Convert to fraction form
    141,260.32/211,979.76 = 78,971.68/x
  3. Step 3: Cross multiply
    141,260.32x = 211,979.76 × 78,971.68
  4. Step 4: Simplify right side
    141,260.32x = 16,740,397,773.20
  5. Step 5: Solve for x
    x = 16,740,397,773.20/141,260.32
  6. Step 6: Final answer
    x = 118,507.43

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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.