Home / 143,683.71-198,289.67-80,021.51

Finding the Fourth Proportional to 143,683.71, 198,289.67 and 80,021.51

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Solution

The fourth proportional to 143,683.71, 198,289.67 and 80,021.51 is: 110,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,683.71 : 198,289.67 = 80,021.51 : x
  2. Step 2: Convert to fraction form
    143,683.71/198,289.67 = 80,021.51/x
  3. Step 3: Cross multiply
    143,683.71x = 198,289.67 × 80,021.51
  4. Step 4: Simplify right side
    143,683.71x = 15,867,437,419.25
  5. Step 5: Solve for x
    x = 15,867,437,419.25/143,683.71
  6. Step 6: Final answer
    x = 110,433.10

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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.