Home / 189,795.02-261,943.18-109,220.90

Finding the Fourth Proportional to 189,795.02, 261,943.18 and 109,220.90

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Solution

The fourth proportional to 189,795.02, 261,943.18 and 109,220.90 is: 150,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,795.02 : 261,943.18 = 109,220.90 : x
  2. Step 2: Convert to fraction form
    189,795.02/261,943.18 = 109,220.90/x
  3. Step 3: Cross multiply
    189,795.02x = 261,943.18 × 109,220.90
  4. Step 4: Simplify right side
    189,795.02x = 28,609,669,868.46
  5. Step 5: Solve for x
    x = 28,609,669,868.46/189,795.02
  6. Step 6: Final answer
    x = 150,739.83

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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.