Home / 155,065.28-213,964.49-91,415.37

Finding the Fourth Proportional to 155,065.28, 213,964.49 and 91,415.37

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Solution

The fourth proportional to 155,065.28, 213,964.49 and 91,415.37 is: 126,138.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,065.28 : 213,964.49 = 91,415.37 : x
  2. Step 2: Convert to fraction form
    155,065.28/213,964.49 = 91,415.37/x
  3. Step 3: Cross multiply
    155,065.28x = 213,964.49 × 91,415.37
  4. Step 4: Simplify right side
    155,065.28x = 19,559,642,563.13
  5. Step 5: Solve for x
    x = 19,559,642,563.13/155,065.28
  6. Step 6: Final answer
    x = 126,138.12

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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.