Home / 141,902.10-212,561.55-71,820.90

Finding the Fourth Proportional to 141,902.10, 212,561.55 and 71,820.90

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Solution

The fourth proportional to 141,902.10, 212,561.55 and 71,820.90 is: 107,583.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,902.10 : 212,561.55 = 71,820.90 : x
  2. Step 2: Convert to fraction form
    141,902.10/212,561.55 = 71,820.90/x
  3. Step 3: Cross multiply
    141,902.10x = 212,561.55 × 71,820.90
  4. Step 4: Simplify right side
    141,902.10x = 15,266,361,826.40
  5. Step 5: Solve for x
    x = 15,266,361,826.40/141,902.10
  6. Step 6: Final answer
    x = 107,583.76

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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.