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Finding the Fourth Proportional to 100,855.40, 151,283.10 and 98,263.40

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Solution

The fourth proportional to 100,855.40, 151,283.10 and 98,263.40 is: 147,395.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,855.40 : 151,283.10 = 98,263.40 : x
  2. Step 2: Convert to fraction form
    100,855.40/151,283.10 = 98,263.40/x
  3. Step 3: Cross multiply
    100,855.40x = 151,283.10 × 98,263.40
  4. Step 4: Simplify right side
    100,855.40x = 14,865,591,768.54
  5. Step 5: Solve for x
    x = 14,865,591,768.54/100,855.40
  6. Step 6: Final answer
    x = 147,395.10

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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.