Home / 143,020.34-197,368.07-79,368.38

Finding the Fourth Proportional to 143,020.34, 197,368.07 and 79,368.38

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Solution

The fourth proportional to 143,020.34, 197,368.07 and 79,368.38 is: 109,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,020.34 : 197,368.07 = 79,368.38 : x
  2. Step 2: Convert to fraction form
    143,020.34/197,368.07 = 79,368.38/x
  3. Step 3: Cross multiply
    143,020.34x = 197,368.07 × 79,368.38
  4. Step 4: Simplify right side
    143,020.34x = 15,664,783,336.07
  5. Step 5: Solve for x
    x = 15,664,783,336.07/143,020.34
  6. Step 6: Final answer
    x = 109,528.36

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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.