Home / 142,121.70-212,923.35-115,683.30

Finding the Fourth Proportional to 142,121.70, 212,923.35 and 115,683.30

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Solution

The fourth proportional to 142,121.70, 212,923.35 and 115,683.30 is: 173,313.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,121.70 : 212,923.35 = 115,683.30 : x
  2. Step 2: Convert to fraction form
    142,121.70/212,923.35 = 115,683.30/x
  3. Step 3: Cross multiply
    142,121.70x = 212,923.35 × 115,683.30
  4. Step 4: Simplify right side
    142,121.70x = 24,631,675,775.06
  5. Step 5: Solve for x
    x = 24,631,675,775.06/142,121.70
  6. Step 6: Final answer
    x = 173,313.97

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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.