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Finding the Fourth Proportional to 125,846.80, 188,575.80 and 109,128.40

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Solution

The fourth proportional to 125,846.80, 188,575.80 and 109,128.40 is: 163,524.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,846.80 : 188,575.80 = 109,128.40 : x
  2. Step 2: Convert to fraction form
    125,846.80/188,575.80 = 109,128.40/x
  3. Step 3: Cross multiply
    125,846.80x = 188,575.80 × 109,128.40
  4. Step 4: Simplify right side
    125,846.80x = 20,578,975,332.72
  5. Step 5: Solve for x
    x = 20,578,975,332.72/125,846.80
  6. Step 6: Final answer
    x = 163,524.03

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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.