Home / 154,143.36-231,057.38-78,101.03

Finding the Fourth Proportional to 154,143.36, 231,057.38 and 78,101.03

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Solution

The fourth proportional to 154,143.36, 231,057.38 and 78,101.03 is: 117,071.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,143.36 : 231,057.38 = 78,101.03 : x
  2. Step 2: Convert to fraction form
    154,143.36/231,057.38 = 78,101.03/x
  3. Step 3: Cross multiply
    154,143.36x = 231,057.38 × 78,101.03
  4. Step 4: Simplify right side
    154,143.36x = 18,045,820,140.00
  5. Step 5: Solve for x
    x = 18,045,820,140.00/154,143.36
  6. Step 6: Final answer
    x = 117,071.67

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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.