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Finding the Fourth Proportional to 102,831.90, 154,185.56 and 67,250.26

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Solution

The fourth proportional to 102,831.90, 154,185.56 and 67,250.26 is: 100,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,831.90 : 154,185.56 = 67,250.26 : x
  2. Step 2: Convert to fraction form
    102,831.90/154,185.56 = 67,250.26/x
  3. Step 3: Cross multiply
    102,831.90x = 154,185.56 × 67,250.26
  4. Step 4: Simplify right side
    102,831.90x = 10,369,018,998.25
  5. Step 5: Solve for x
    x = 10,369,018,998.25/102,831.90
  6. Step 6: Final answer
    x = 100,834.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.