Home / 143,591-198,152.12-79,927.40

Finding the Fourth Proportional to 143,591, 198,152.12 and 79,927.40

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Solution

The fourth proportional to 143,591, 198,152.12 and 79,927.40 is: 110,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,591 : 198,152.12 = 79,927.40 : x
  2. Step 2: Convert to fraction form
    143,591/198,152.12 = 79,927.40/x
  3. Step 3: Cross multiply
    143,591x = 198,152.12 × 79,927.40
  4. Step 4: Simplify right side
    143,591x = 15,837,783,756.09
  5. Step 5: Solve for x
    x = 15,837,783,756.09/143,591
  6. Step 6: Final answer
    x = 110,297.89

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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.