Home / 143,349.78-197,817.87-79,686.21

Finding the Fourth Proportional to 143,349.78, 197,817.87 and 79,686.21

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Solution

The fourth proportional to 143,349.78, 197,817.87 and 79,686.21 is: 109,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.78 : 197,817.87 = 79,686.21 : x
  2. Step 2: Convert to fraction form
    143,349.78/197,817.87 = 79,686.21/x
  3. Step 3: Cross multiply
    143,349.78x = 197,817.87 × 79,686.21
  4. Step 4: Simplify right side
    143,349.78x = 15,763,356,330.57
  5. Step 5: Solve for x
    x = 15,763,356,330.57/143,349.78
  6. Step 6: Final answer
    x = 109,964.29

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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.