Home / 143,205.50-197,626.71-78,675.57

Finding the Fourth Proportional to 143,205.50, 197,626.71 and 78,675.57

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Solution

The fourth proportional to 143,205.50, 197,626.71 and 78,675.57 is: 108,574.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,205.50 : 197,626.71 = 78,675.57 : x
  2. Step 2: Convert to fraction form
    143,205.50/197,626.71 = 78,675.57/x
  3. Step 3: Cross multiply
    143,205.50x = 197,626.71 × 78,675.57
  4. Step 4: Simplify right side
    143,205.50x = 15,548,394,351.51
  5. Step 5: Solve for x
    x = 15,548,394,351.51/143,205.50
  6. Step 6: Final answer
    x = 108,574.00

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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.