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Finding the Fourth Proportional to 163,692.40, 245,538.60 and 137,426.80

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Solution

The fourth proportional to 163,692.40, 245,538.60 and 137,426.80 is: 206,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,692.40 : 245,538.60 = 137,426.80 : x
  2. Step 2: Convert to fraction form
    163,692.40/245,538.60 = 137,426.80/x
  3. Step 3: Cross multiply
    163,692.40x = 245,538.60 × 137,426.80
  4. Step 4: Simplify right side
    163,692.40x = 33,743,584,074.48
  5. Step 5: Solve for x
    x = 33,743,584,074.48/163,692.40
  6. Step 6: Final answer
    x = 206,140.20

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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.