Home / 142,000.20-212,741.10-115,561.80

Finding the Fourth Proportional to 142,000.20, 212,741.10 and 115,561.80

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Solution

The fourth proportional to 142,000.20, 212,741.10 and 115,561.80 is: 173,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,000.20 : 212,741.10 = 115,561.80 : x
  2. Step 2: Convert to fraction form
    142,000.20/212,741.10 = 115,561.80/x
  3. Step 3: Cross multiply
    142,000.20x = 212,741.10 × 115,561.80
  4. Step 4: Simplify right side
    142,000.20x = 24,584,744,449.98
  5. Step 5: Solve for x
    x = 24,584,744,449.98/142,000.20
  6. Step 6: Final answer
    x = 173,131.76

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1.5x scale

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.