Home / 143,801.51-198,442.09-80,137.67

Finding the Fourth Proportional to 143,801.51, 198,442.09 and 80,137.67

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Solution

The fourth proportional to 143,801.51, 198,442.09 and 80,137.67 is: 110,587.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,801.51 : 198,442.09 = 80,137.67 : x
  2. Step 2: Convert to fraction form
    143,801.51/198,442.09 = 80,137.67/x
  3. Step 3: Cross multiply
    143,801.51x = 198,442.09 × 80,137.67
  4. Step 4: Simplify right side
    143,801.51x = 15,902,686,722.53
  5. Step 5: Solve for x
    x = 15,902,686,722.53/143,801.51
  6. Step 6: Final answer
    x = 110,587.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.