Home / 211,196.96-316,739.82-78,115.36

Finding the Fourth Proportional to 211,196.96, 316,739.82 and 78,115.36

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Solution

The fourth proportional to 211,196.96, 316,739.82 and 78,115.36 is: 117,152.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,196.96 : 316,739.82 = 78,115.36 : x
  2. Step 2: Convert to fraction form
    211,196.96/316,739.82 = 78,115.36/x
  3. Step 3: Cross multiply
    211,196.96x = 316,739.82 × 78,115.36
  4. Step 4: Simplify right side
    211,196.96x = 24,742,245,065.64
  5. Step 5: Solve for x
    x = 24,742,245,065.64/211,196.96
  6. Step 6: Final answer
    x = 117,152.47

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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.