Home / 78,119.44-117,511.76-70,812.13

Finding the Fourth Proportional to 78,119.44, 117,511.76 and 70,812.13

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Solution

The fourth proportional to 78,119.44, 117,511.76 and 70,812.13 is: 106,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.44 : 117,511.76 = 70,812.13 : x
  2. Step 2: Convert to fraction form
    78,119.44/117,511.76 = 70,812.13/x
  3. Step 3: Cross multiply
    78,119.44x = 117,511.76 × 70,812.13
  4. Step 4: Simplify right side
    78,119.44x = 8,321,258,025.65
  5. Step 5: Solve for x
    x = 8,321,258,025.65/78,119.44
  6. Step 6: Final answer
    x = 106,519.68

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1.5x scale

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.