Home / 145,449.14-218,378.06-74,422.71

Finding the Fourth Proportional to 145,449.14, 218,378.06 and 74,422.71

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Solution

The fourth proportional to 145,449.14, 218,378.06 and 74,422.71 is: 111,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,449.14 : 218,378.06 = 74,422.71 : x
  2. Step 2: Convert to fraction form
    145,449.14/218,378.06 = 74,422.71/x
  3. Step 3: Cross multiply
    145,449.14x = 218,378.06 × 74,422.71
  4. Step 4: Simplify right side
    145,449.14x = 16,252,286,936.71
  5. Step 5: Solve for x
    x = 16,252,286,936.71/145,449.14
  6. Step 6: Final answer
    x = 111,738.63

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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.