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Finding the Fourth Proportional to 127,362, 189,697.62 and 120,700.56

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Solution

The fourth proportional to 127,362, 189,697.62 and 120,700.56 is: 179,775.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,362 : 189,697.62 = 120,700.56 : x
  2. Step 2: Convert to fraction form
    127,362/189,697.62 = 120,700.56/x
  3. Step 3: Cross multiply
    127,362x = 189,697.62 × 120,700.56
  4. Step 4: Simplify right side
    127,362x = 22,896,608,964.67
  5. Step 5: Solve for x
    x = 22,896,608,964.67/127,362
  6. Step 6: Final answer
    x = 179,775.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.