Home / 154,189.96-212,779.38-87,120.52

Finding the Fourth Proportional to 154,189.96, 212,779.38 and 87,120.52

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Solution

The fourth proportional to 154,189.96, 212,779.38 and 87,120.52 is: 120,224.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,189.96 : 212,779.38 = 87,120.52 : x
  2. Step 2: Convert to fraction form
    154,189.96/212,779.38 = 87,120.52/x
  3. Step 3: Cross multiply
    154,189.96x = 212,779.38 × 87,120.52
  4. Step 4: Simplify right side
    154,189.96x = 18,537,450,230.88
  5. Step 5: Solve for x
    x = 18,537,450,230.88/154,189.96
  6. Step 6: Final answer
    x = 120,224.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.