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Finding the Fourth Proportional to 109,918.40, 164,877.60 and 102,545.60

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Solution

The fourth proportional to 109,918.40, 164,877.60 and 102,545.60 is: 153,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,918.40 : 164,877.60 = 102,545.60 : x
  2. Step 2: Convert to fraction form
    109,918.40/164,877.60 = 102,545.60/x
  3. Step 3: Cross multiply
    109,918.40x = 164,877.60 × 102,545.60
  4. Step 4: Simplify right side
    109,918.40x = 16,907,472,418.56
  5. Step 5: Solve for x
    x = 16,907,472,418.56/109,918.40
  6. Step 6: Final answer
    x = 153,818.40

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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.