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Finding the Fourth Proportional to 143,602.58, 198,166.21 and 79,939.01

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Solution

The fourth proportional to 143,602.58, 198,166.21 and 79,939.01 is: 110,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,602.58 : 198,166.21 = 79,939.01 : x
  2. Step 2: Convert to fraction form
    143,602.58/198,166.21 = 79,939.01/x
  3. Step 3: Cross multiply
    143,602.58x = 198,166.21 × 79,939.01
  4. Step 4: Simplify right side
    143,602.58x = 15,841,210,642.85
  5. Step 5: Solve for x
    x = 15,841,210,642.85/143,602.58
  6. Step 6: Final answer
    x = 110,312.86

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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.