Home / 143,680.29-198,255.06-87,091.67

Finding the Fourth Proportional to 143,680.29, 198,255.06 and 87,091.67

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Solution

The fourth proportional to 143,680.29, 198,255.06 and 87,091.67 is: 120,172.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,680.29 : 198,255.06 = 87,091.67 : x
  2. Step 2: Convert to fraction form
    143,680.29/198,255.06 = 87,091.67/x
  3. Step 3: Cross multiply
    143,680.29x = 198,255.06 × 87,091.67
  4. Step 4: Simplify right side
    143,680.29x = 17,266,363,270.07
  5. Step 5: Solve for x
    x = 17,266,363,270.07/143,680.29
  6. Step 6: Final answer
    x = 120,172.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.