Home / 208,743,049.76-312,976,367.01-99,585,068.36

Finding the Fourth Proportional to 208,743,049.76, 312,976,367.01 and 99,585,068.36

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Solution

The fourth proportional to 208,743,049.76, 312,976,367.01 and 99,585,068.36 is: 149,311,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,743,049.76 : 312,976,367.01 = 99,585,068.36 : x
  2. Step 2: Convert to fraction form
    208,743,049.76/312,976,367.01 = 99,585,068.36/x
  3. Step 3: Cross multiply
    208,743,049.76x = 312,976,367.01 × 99,585,068.36
  4. Step 4: Simplify right side
    208,743,049.76x = 31,167,772,903,755,296
  5. Step 5: Solve for x
    x = 31,167,772,903,755,296/208,743,049.76
  6. Step 6: Final answer
    x = 149,311,667.81

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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.