Home / 138,669.58-208,031.34-53,274.22

Finding the Fourth Proportional to 138,669.58, 208,031.34 and 53,274.22

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Solution

The fourth proportional to 138,669.58, 208,031.34 and 53,274.22 is: 79,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,669.58 : 208,031.34 = 53,274.22 : x
  2. Step 2: Convert to fraction form
    138,669.58/208,031.34 = 53,274.22/x
  3. Step 3: Cross multiply
    138,669.58x = 208,031.34 × 53,274.22
  4. Step 4: Simplify right side
    138,669.58x = 11,082,707,374.05
  5. Step 5: Solve for x
    x = 11,082,707,374.05/138,669.58
  6. Step 6: Final answer
    x = 79,921.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.