Home / 209,318.14-313,988.10-69,087.70

Finding the Fourth Proportional to 209,318.14, 313,988.10 and 69,087.70

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Solution

The fourth proportional to 209,318.14, 313,988.10 and 69,087.70 is: 103,635.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,318.14 : 313,988.10 = 69,087.70 : x
  2. Step 2: Convert to fraction form
    209,318.14/313,988.10 = 69,087.70/x
  3. Step 3: Cross multiply
    209,318.14x = 313,988.10 × 69,087.70
  4. Step 4: Simplify right side
    209,318.14x = 21,692,715,656.37
  5. Step 5: Solve for x
    x = 21,692,715,656.37/209,318.14
  6. Step 6: Final answer
    x = 103,635.14

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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.