Home / 91,993,732.20-137,990,598.30-78,315,359.40

Finding the Fourth Proportional to 91,993,732.20, 137,990,598.30 and 78,315,359.40

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Solution

The fourth proportional to 91,993,732.20, 137,990,598.30 and 78,315,359.40 is: 117,473,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,993,732.20 : 137,990,598.30 = 78,315,359.40 : x
  2. Step 2: Convert to fraction form
    91,993,732.20/137,990,598.30 = 78,315,359.40/x
  3. Step 3: Cross multiply
    91,993,732.20x = 137,990,598.30 × 78,315,359.40
  4. Step 4: Simplify right side
    91,993,732.20x = 10,806,783,299,685,530
  5. Step 5: Solve for x
    x = 10,806,783,299,685,530/91,993,732.20
  6. Step 6: Final answer
    x = 117,473,039.10

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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.