Home / 143,006.40-196,900.20-121,451.22

Finding the Fourth Proportional to 143,006.40, 196,900.20 and 121,451.22

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Solution

The fourth proportional to 143,006.40, 196,900.20 and 121,451.22 is: 167,221.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,006.40 : 196,900.20 = 121,451.22 : x
  2. Step 2: Convert to fraction form
    143,006.40/196,900.20 = 121,451.22/x
  3. Step 3: Cross multiply
    143,006.40x = 196,900.20 × 121,451.22
  4. Step 4: Simplify right side
    143,006.40x = 23,913,769,508.24
  5. Step 5: Solve for x
    x = 23,913,769,508.24/143,006.40
  6. Step 6: Final answer
    x = 167,221.67

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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.