Home / 138,460.49-208,080.29-82,310.63

Finding the Fourth Proportional to 138,460.49, 208,080.29 and 82,310.63

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Solution

The fourth proportional to 138,460.49, 208,080.29 and 82,310.63 is: 123,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,460.49 : 208,080.29 = 82,310.63 : x
  2. Step 2: Convert to fraction form
    138,460.49/208,080.29 = 82,310.63/x
  3. Step 3: Cross multiply
    138,460.49x = 208,080.29 × 82,310.63
  4. Step 4: Simplify right side
    138,460.49x = 17,127,220,096.31
  5. Step 5: Solve for x
    x = 17,127,220,096.31/138,460.49
  6. Step 6: Final answer
    x = 123,697.53

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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.