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Finding the Fourth Proportional to 135,855.40, 203,702.10 and 83,302.60

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Solution

The fourth proportional to 135,855.40, 203,702.10 and 83,302.60 is: 124,904.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,855.40 : 203,702.10 = 83,302.60 : x
  2. Step 2: Convert to fraction form
    135,855.40/203,702.10 = 83,302.60/x
  3. Step 3: Cross multiply
    135,855.40x = 203,702.10 × 83,302.60
  4. Step 4: Simplify right side
    135,855.40x = 16,968,914,555.46
  5. Step 5: Solve for x
    x = 16,968,914,555.46/135,855.40
  6. Step 6: Final answer
    x = 124,904.23

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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.