Home / 143,369.10-214,794.45-126,780.30

Finding the Fourth Proportional to 143,369.10, 214,794.45 and 126,780.30

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Solution

The fourth proportional to 143,369.10, 214,794.45 and 126,780.30 is: 189,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,369.10 : 214,794.45 = 126,780.30 : x
  2. Step 2: Convert to fraction form
    143,369.10/214,794.45 = 126,780.30/x
  3. Step 3: Cross multiply
    143,369.10x = 214,794.45 × 126,780.30
  4. Step 4: Simplify right side
    143,369.10x = 27,231,704,809.34
  5. Step 5: Solve for x
    x = 27,231,704,809.34/143,369.10
  6. Step 6: Final answer
    x = 189,941.24

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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.