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Finding the Fourth Proportional to 125,255.15, 187,879.95 and 30,485.98

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Solution

The fourth proportional to 125,255.15, 187,879.95 and 30,485.98 is: 45,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,255.15 : 187,879.95 = 30,485.98 : x
  2. Step 2: Convert to fraction form
    125,255.15/187,879.95 = 30,485.98/x
  3. Step 3: Cross multiply
    125,255.15x = 187,879.95 × 30,485.98
  4. Step 4: Simplify right side
    125,255.15x = 5,727,703,928.40
  5. Step 5: Solve for x
    x = 5,727,703,928.40/125,255.15
  6. Step 6: Final answer
    x = 45,728.29

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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.