Home / 142,928.80-197,228.82-79,266.40

Finding the Fourth Proportional to 142,928.80, 197,228.82 and 79,266.40

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Solution

The fourth proportional to 142,928.80, 197,228.82 and 79,266.40 is: 109,380.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,928.80 : 197,228.82 = 79,266.40 : x
  2. Step 2: Convert to fraction form
    142,928.80/197,228.82 = 79,266.40/x
  3. Step 3: Cross multiply
    142,928.80x = 197,228.82 × 79,266.40
  4. Step 4: Simplify right side
    142,928.80x = 15,633,618,537.65
  5. Step 5: Solve for x
    x = 15,633,618,537.65/142,928.80
  6. Step 6: Final answer
    x = 109,380.46

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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.