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Finding the Fourth Proportional to 138,497.10, 191,448.87 and 123,538.02

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Solution

The fourth proportional to 138,497.10, 191,448.87 and 123,538.02 is: 170,770.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,497.10 : 191,448.87 = 123,538.02 : x
  2. Step 2: Convert to fraction form
    138,497.10/191,448.87 = 123,538.02/x
  3. Step 3: Cross multiply
    138,497.10x = 191,448.87 × 123,538.02
  4. Step 4: Simplify right side
    138,497.10x = 23,651,214,331.04
  5. Step 5: Solve for x
    x = 23,651,214,331.04/138,497.10
  6. Step 6: Final answer
    x = 170,770.47

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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.