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Finding the Fourth Proportional to 111,702.90, 154,098.63 and 98,969.07

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Solution

The fourth proportional to 111,702.90, 154,098.63 and 98,969.07 is: 136,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,702.90 : 154,098.63 = 98,969.07 : x
  2. Step 2: Convert to fraction form
    111,702.90/154,098.63 = 98,969.07/x
  3. Step 3: Cross multiply
    111,702.90x = 154,098.63 × 98,969.07
  4. Step 4: Simplify right side
    111,702.90x = 15,250,998,099.37
  5. Step 5: Solve for x
    x = 15,250,998,099.37/111,702.90
  6. Step 6: Final answer
    x = 136,531.80

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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.