Home / 142,004.20-212,747.10-115,565.80

Finding the Fourth Proportional to 142,004.20, 212,747.10 and 115,565.80

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Solution

The fourth proportional to 142,004.20, 212,747.10 and 115,565.80 is: 173,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,004.20 : 212,747.10 = 115,565.80 : x
  2. Step 2: Convert to fraction form
    142,004.20/212,747.10 = 115,565.80/x
  3. Step 3: Cross multiply
    142,004.20x = 212,747.10 × 115,565.80
  4. Step 4: Simplify right side
    142,004.20x = 24,586,288,809.18
  5. Step 5: Solve for x
    x = 24,586,288,809.18/142,004.20
  6. Step 6: Final answer
    x = 173,137.76

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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.