Home / 155,068.28-213,968.63-91,418.37

Finding the Fourth Proportional to 155,068.28, 213,968.63 and 91,418.37

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Solution

The fourth proportional to 155,068.28, 213,968.63 and 91,418.37 is: 126,142.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,068.28 : 213,968.63 = 91,418.37 : x
  2. Step 2: Convert to fraction form
    155,068.28/213,968.63 = 91,418.37/x
  3. Step 3: Cross multiply
    155,068.28x = 213,968.63 × 91,418.37
  4. Step 4: Simplify right side
    155,068.28x = 19,560,662,928.64
  5. Step 5: Solve for x
    x = 19,560,662,928.64/155,068.28
  6. Step 6: Final answer
    x = 126,142.26

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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.