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Finding the Fourth Proportional to 143,798.51, 198,437.96 and 80,134.67

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Solution

The fourth proportional to 143,798.51, 198,437.96 and 80,134.67 is: 110,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,798.51 : 198,437.96 = 80,134.67 : x
  2. Step 2: Convert to fraction form
    143,798.51/198,437.96 = 80,134.67/x
  3. Step 3: Cross multiply
    143,798.51x = 198,437.96 × 80,134.67
  4. Step 4: Simplify right side
    143,798.51x = 15,901,759,047.21
  5. Step 5: Solve for x
    x = 15,901,759,047.21/143,798.51
  6. Step 6: Final answer
    x = 110,583.62

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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.