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Finding the Fourth Proportional to 103,350.40, 154,641.60 and 75,702.40

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Solution

The fourth proportional to 103,350.40, 154,641.60 and 75,702.40 is: 113,272.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,350.40 : 154,641.60 = 75,702.40 : x
  2. Step 2: Convert to fraction form
    103,350.40/154,641.60 = 75,702.40/x
  3. Step 3: Cross multiply
    103,350.40x = 154,641.60 × 75,702.40
  4. Step 4: Simplify right side
    103,350.40x = 11,706,740,259.84
  5. Step 5: Solve for x
    x = 11,706,740,259.84/103,350.40
  6. Step 6: Final answer
    x = 113,272.33

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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.