Home / 143,025.32-197,448.46-100,772.48

Finding the Fourth Proportional to 143,025.32, 197,448.46 and 100,772.48

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Solution

The fourth proportional to 143,025.32, 197,448.46 and 100,772.48 is: 139,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,025.32 : 197,448.46 = 100,772.48 : x
  2. Step 2: Convert to fraction form
    143,025.32/197,448.46 = 100,772.48/x
  3. Step 3: Cross multiply
    143,025.32x = 197,448.46 × 100,772.48
  4. Step 4: Simplify right side
    143,025.32x = 19,897,370,986.38
  5. Step 5: Solve for x
    x = 19,897,370,986.38/143,025.32
  6. Step 6: Final answer
    x = 139,117.82

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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.