Home / 143,681.69-198,286.88-80,019.49

Finding the Fourth Proportional to 143,681.69, 198,286.88 and 80,019.49

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Solution

The fourth proportional to 143,681.69, 198,286.88 and 80,019.49 is: 110,430.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,681.69 : 198,286.88 = 80,019.49 : x
  2. Step 2: Convert to fraction form
    143,681.69/198,286.88 = 80,019.49/x
  3. Step 3: Cross multiply
    143,681.69x = 198,286.88 × 80,019.49
  4. Step 4: Simplify right side
    143,681.69x = 15,866,815,011.29
  5. Step 5: Solve for x
    x = 15,866,815,011.29/143,681.69
  6. Step 6: Final answer
    x = 110,430.32

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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.