Home / 91,993,669.70-137,990,504.55-78,315,296.90

Finding the Fourth Proportional to 91,993,669.70, 137,990,504.55 and 78,315,296.90

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Solution

The fourth proportional to 91,993,669.70, 137,990,504.55 and 78,315,296.90 is: 117,472,945.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,993,669.70 : 137,990,504.55 = 78,315,296.90 : x
  2. Step 2: Convert to fraction form
    91,993,669.70/137,990,504.55 = 78,315,296.90/x
  3. Step 3: Cross multiply
    91,993,669.70x = 137,990,504.55 × 78,315,296.90
  4. Step 4: Simplify right side
    91,993,669.70x = 10,806,767,333,214,052
  5. Step 5: Solve for x
    x = 10,806,767,333,214,052/91,993,669.70
  6. Step 6: Final answer
    x = 117,472,945.35

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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.