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Finding the Fourth Proportional to 91,110.40, 136,665.60 and 89,881.60

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Solution

The fourth proportional to 91,110.40, 136,665.60 and 89,881.60 is: 134,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,110.40 : 136,665.60 = 89,881.60 : x
  2. Step 2: Convert to fraction form
    91,110.40/136,665.60 = 89,881.60/x
  3. Step 3: Cross multiply
    91,110.40x = 136,665.60 × 89,881.60
  4. Step 4: Simplify right side
    91,110.40x = 12,283,722,792.96
  5. Step 5: Solve for x
    x = 12,283,722,792.96/91,110.40
  6. Step 6: Final answer
    x = 134,822.40

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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.