Home / 138,881.34-208,241.76-122,274.72

Finding the Fourth Proportional to 138,881.34, 208,241.76 and 122,274.72

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Solution

The fourth proportional to 138,881.34, 208,241.76 and 122,274.72 is: 183,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,881.34 : 208,241.76 = 122,274.72 : x
  2. Step 2: Convert to fraction form
    138,881.34/208,241.76 = 122,274.72/x
  3. Step 3: Cross multiply
    138,881.34x = 208,241.76 × 122,274.72
  4. Step 4: Simplify right side
    138,881.34x = 25,462,702,896.31
  5. Step 5: Solve for x
    x = 25,462,702,896.31/138,881.34
  6. Step 6: Final answer
    x = 183,341.43

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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.