Home / 143,293.29-197,536.33-100,138.80

Finding the Fourth Proportional to 143,293.29, 197,536.33 and 100,138.80

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Solution

The fourth proportional to 143,293.29, 197,536.33 and 100,138.80 is: 138,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,293.29 : 197,536.33 = 100,138.80 : x
  2. Step 2: Convert to fraction form
    143,293.29/197,536.33 = 100,138.80/x
  3. Step 3: Cross multiply
    143,293.29x = 197,536.33 × 100,138.80
  4. Step 4: Simplify right side
    143,293.29x = 19,781,051,042.60
  5. Step 5: Solve for x
    x = 19,781,051,042.60/143,293.29
  6. Step 6: Final answer
    x = 138,045.90

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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.