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Finding the Fourth Proportional to 149,128.40, 223,692.60 and 147,816.20

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Solution

The fourth proportional to 149,128.40, 223,692.60 and 147,816.20 is: 221,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,128.40 : 223,692.60 = 147,816.20 : x
  2. Step 2: Convert to fraction form
    149,128.40/223,692.60 = 147,816.20/x
  3. Step 3: Cross multiply
    149,128.40x = 223,692.60 × 147,816.20
  4. Step 4: Simplify right side
    149,128.40x = 33,065,390,100.12
  5. Step 5: Solve for x
    x = 33,065,390,100.12/149,128.40
  6. Step 6: Final answer
    x = 221,724.30

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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.