Home / 211,191.96-316,732.32-78,110.34

Finding the Fourth Proportional to 211,191.96, 316,732.32 and 78,110.34

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Solution

The fourth proportional to 211,191.96, 316,732.32 and 78,110.34 is: 117,144.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,191.96 : 316,732.32 = 78,110.34 : x
  2. Step 2: Convert to fraction form
    211,191.96/316,732.32 = 78,110.34/x
  3. Step 3: Cross multiply
    211,191.96x = 316,732.32 × 78,110.34
  4. Step 4: Simplify right side
    211,191.96x = 24,740,069,204.19
  5. Step 5: Solve for x
    x = 24,740,069,204.19/211,191.96
  6. Step 6: Final answer
    x = 117,144.94

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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.