Home / 143,801.70-198,448.29-80,137.32

Finding the Fourth Proportional to 143,801.70, 198,448.29 and 80,137.32

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Solution

The fourth proportional to 143,801.70, 198,448.29 and 80,137.32 is: 110,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,801.70 : 198,448.29 = 80,137.32 : x
  2. Step 2: Convert to fraction form
    143,801.70/198,448.29 = 80,137.32/x
  3. Step 3: Cross multiply
    143,801.70x = 198,448.29 × 80,137.32
  4. Step 4: Simplify right side
    143,801.70x = 15,903,114,119.18
  5. Step 5: Solve for x
    x = 15,903,114,119.18/143,801.70
  6. Step 6: Final answer
    x = 110,590.58

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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.