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Finding the Fourth Proportional to 163,692.80, 245,539.20 and 141,531.20

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Solution

The fourth proportional to 163,692.80, 245,539.20 and 141,531.20 is: 212,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,692.80 : 245,539.20 = 141,531.20 : x
  2. Step 2: Convert to fraction form
    163,692.80/245,539.20 = 141,531.20/x
  3. Step 3: Cross multiply
    163,692.80x = 245,539.20 × 141,531.20
  4. Step 4: Simplify right side
    163,692.80x = 34,751,457,623.04
  5. Step 5: Solve for x
    x = 34,751,457,623.04/163,692.80
  6. Step 6: Final answer
    x = 212,296.80

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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.