Home / 209,958.10-315,010.05-91,714.30

Finding the Fourth Proportional to 209,958.10, 315,010.05 and 91,714.30

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Solution

The fourth proportional to 209,958.10, 315,010.05 and 91,714.30 is: 137,603.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,958.10 : 315,010.05 = 91,714.30 : x
  2. Step 2: Convert to fraction form
    209,958.10/315,010.05 = 91,714.30/x
  3. Step 3: Cross multiply
    209,958.10x = 315,010.05 × 91,714.30
  4. Step 4: Simplify right side
    209,958.10x = 28,890,926,228.72
  5. Step 5: Solve for x
    x = 28,890,926,228.72/209,958.10
  6. Step 6: Final answer
    x = 137,603.29

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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.