Home / 280,664.94-421,025.76-91,117.38

Finding the Fourth Proportional to 280,664.94, 421,025.76 and 91,117.38

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Solution

The fourth proportional to 280,664.94, 421,025.76 and 91,117.38 is: 136,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,664.94 : 421,025.76 = 91,117.38 : x
  2. Step 2: Convert to fraction form
    280,664.94/421,025.76 = 91,117.38/x
  3. Step 3: Cross multiply
    280,664.94x = 421,025.76 × 91,117.38
  4. Step 4: Simplify right side
    280,664.94x = 38,362,764,163.71
  5. Step 5: Solve for x
    x = 38,362,764,163.71/280,664.94
  6. Step 6: Final answer
    x = 136,685.27

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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.