Home / 139,389.39-209,084.10-45,902.43

Finding the Fourth Proportional to 139,389.39, 209,084.10 and 45,902.43

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Solution

The fourth proportional to 139,389.39, 209,084.10 and 45,902.43 is: 68,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,389.39 : 209,084.10 = 45,902.43 : x
  2. Step 2: Convert to fraction form
    139,389.39/209,084.10 = 45,902.43/x
  3. Step 3: Cross multiply
    139,389.39x = 209,084.10 × 45,902.43
  4. Step 4: Simplify right side
    139,389.39x = 9,597,468,264.36
  5. Step 5: Solve for x
    x = 9,597,468,264.36/139,389.39
  6. Step 6: Final answer
    x = 68,853.65

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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.