Home / 138,036.69-190,227.09-118,910.47

Finding the Fourth Proportional to 138,036.69, 190,227.09 and 118,910.47

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Solution

The fourth proportional to 138,036.69, 190,227.09 and 118,910.47 is: 163,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,036.69 : 190,227.09 = 118,910.47 : x
  2. Step 2: Convert to fraction form
    138,036.69/190,227.09 = 118,910.47/x
  3. Step 3: Cross multiply
    138,036.69x = 190,227.09 × 118,910.47
  4. Step 4: Simplify right side
    138,036.69x = 22,619,992,678.63
  5. Step 5: Solve for x
    x = 22,619,992,678.63/138,036.69
  6. Step 6: Final answer
    x = 163,869.42

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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.