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Finding the Fourth Proportional to 106,522.40, 159,706.80 and 69,607.20

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Solution

The fourth proportional to 106,522.40, 159,706.80 and 69,607.20 is: 104,360.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,522.40 : 159,706.80 = 69,607.20 : x
  2. Step 2: Convert to fraction form
    106,522.40/159,706.80 = 69,607.20/x
  3. Step 3: Cross multiply
    106,522.40x = 159,706.80 × 69,607.20
  4. Step 4: Simplify right side
    106,522.40x = 11,116,743,168.96
  5. Step 5: Solve for x
    x = 11,116,743,168.96/106,522.40
  6. Step 6: Final answer
    x = 104,360.61

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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.