Home / 143,938.42-198,636.09-80,280.34

Finding the Fourth Proportional to 143,938.42, 198,636.09 and 80,280.34

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Solution

The fourth proportional to 143,938.42, 198,636.09 and 80,280.34 is: 110,787.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.42 : 198,636.09 = 80,280.34 : x
  2. Step 2: Convert to fraction form
    143,938.42/198,636.09 = 80,280.34/x
  3. Step 3: Cross multiply
    143,938.42x = 198,636.09 × 80,280.34
  4. Step 4: Simplify right side
    143,938.42x = 15,946,572,841.47
  5. Step 5: Solve for x
    x = 15,946,572,841.47/143,938.42
  6. Step 6: Final answer
    x = 110,787.47

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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.