Home / 143,683.76-198,283.59-80,021.55

Finding the Fourth Proportional to 143,683.76, 198,283.59 and 80,021.55

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Solution

The fourth proportional to 143,683.76, 198,283.59 and 80,021.55 is: 110,429.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,683.76 : 198,283.59 = 80,021.55 : x
  2. Step 2: Convert to fraction form
    143,683.76/198,283.59 = 80,021.55/x
  3. Step 3: Cross multiply
    143,683.76x = 198,283.59 × 80,021.55
  4. Step 4: Simplify right side
    143,683.76x = 15,866,960,211.36
  5. Step 5: Solve for x
    x = 15,866,960,211.36/143,683.76
  6. Step 6: Final answer
    x = 110,429.74

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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.