Home / 143,031.51-215,403.78-130,262.54

Finding the Fourth Proportional to 143,031.51, 215,403.78 and 130,262.54

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Solution

The fourth proportional to 143,031.51, 215,403.78 and 130,262.54 is: 196,173.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,031.51 : 215,403.78 = 130,262.54 : x
  2. Step 2: Convert to fraction form
    143,031.51/215,403.78 = 130,262.54/x
  3. Step 3: Cross multiply
    143,031.51x = 215,403.78 × 130,262.54
  4. Step 4: Simplify right side
    143,031.51x = 28,059,042,431.38
  5. Step 5: Solve for x
    x = 28,059,042,431.38/143,031.51
  6. Step 6: Final answer
    x = 196,173.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.