Home / 143,004.55-197,297.40-81,706.76

Finding the Fourth Proportional to 143,004.55, 197,297.40 and 81,706.76

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Solution

The fourth proportional to 143,004.55, 197,297.40 and 81,706.76 is: 112,727.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,004.55 : 197,297.40 = 81,706.76 : x
  2. Step 2: Convert to fraction form
    143,004.55/197,297.40 = 81,706.76/x
  3. Step 3: Cross multiply
    143,004.55x = 197,297.40 × 81,706.76
  4. Step 4: Simplify right side
    143,004.55x = 16,120,530,119.67
  5. Step 5: Solve for x
    x = 16,120,530,119.67/143,004.55
  6. Step 6: Final answer
    x = 112,727.39

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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.