Home / 143,458.70-197,970.32-98,135.15

Finding the Fourth Proportional to 143,458.70, 197,970.32 and 98,135.15

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Solution

The fourth proportional to 143,458.70, 197,970.32 and 98,135.15 is: 135,424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,458.70 : 197,970.32 = 98,135.15 : x
  2. Step 2: Convert to fraction form
    143,458.70/197,970.32 = 98,135.15/x
  3. Step 3: Cross multiply
    143,458.70x = 197,970.32 × 98,135.15
  4. Step 4: Simplify right side
    143,458.70x = 19,427,847,048.75
  5. Step 5: Solve for x
    x = 19,427,847,048.75/143,458.70
  6. Step 6: Final answer
    x = 135,424.67

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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.