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Finding the Fourth Proportional to 125,847.80, 188,577.30 and 109,129.40

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Solution

The fourth proportional to 125,847.80, 188,577.30 and 109,129.40 is: 163,525.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,847.80 : 188,577.30 = 109,129.40 : x
  2. Step 2: Convert to fraction form
    125,847.80/188,577.30 = 109,129.40/x
  3. Step 3: Cross multiply
    125,847.80x = 188,577.30 × 109,129.40
  4. Step 4: Simplify right side
    125,847.80x = 20,579,327,602.62
  5. Step 5: Solve for x
    x = 20,579,327,602.62/125,847.80
  6. Step 6: Final answer
    x = 163,525.53

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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.