Home / 135,157.82-186,510.26-74,724.94

Finding the Fourth Proportional to 135,157.82, 186,510.26 and 74,724.94

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Solution

The fourth proportional to 135,157.82, 186,510.26 and 74,724.94 is: 103,116.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,157.82 : 186,510.26 = 74,724.94 : x
  2. Step 2: Convert to fraction form
    135,157.82/186,510.26 = 74,724.94/x
  3. Step 3: Cross multiply
    135,157.82x = 186,510.26 × 74,724.94
  4. Step 4: Simplify right side
    135,157.82x = 13,936,967,358.71
  5. Step 5: Solve for x
    x = 13,936,967,358.71/135,157.82
  6. Step 6: Final answer
    x = 103,116.25

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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.