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Finding the Fourth Proportional to 143,172.58, 214,596.84 and 72,903.46

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Solution

The fourth proportional to 143,172.58, 214,596.84 and 72,903.46 is: 109,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,172.58 : 214,596.84 = 72,903.46 : x
  2. Step 2: Convert to fraction form
    143,172.58/214,596.84 = 72,903.46/x
  3. Step 3: Cross multiply
    143,172.58x = 214,596.84 × 72,903.46
  4. Step 4: Simplify right side
    143,172.58x = 15,644,852,141.07
  5. Step 5: Solve for x
    x = 15,644,852,141.07/143,172.58
  6. Step 6: Final answer
    x = 109,272.68

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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.