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Finding the Fourth Proportional to 138,254.50, 190,692.88 and 92,291.00

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Solution

The fourth proportional to 138,254.50, 190,692.88 and 92,291.00 is: 127,295.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,254.50 : 190,692.88 = 92,291.00 : x
  2. Step 2: Convert to fraction form
    138,254.50/190,692.88 = 92,291.00/x
  3. Step 3: Cross multiply
    138,254.50x = 190,692.88 × 92,291.00
  4. Step 4: Simplify right side
    138,254.50x = 17,599,235,923.03
  5. Step 5: Solve for x
    x = 17,599,235,923.03/138,254.50
  6. Step 6: Final answer
    x = 127,295.94

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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.