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Finding the Fourth Proportional to 361,891.20, 542,840.70 and 109,173.87

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Solution

The fourth proportional to 361,891.20, 542,840.70 and 109,173.87 is: 163,761.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,891.20 : 542,840.70 = 109,173.87 : x
  2. Step 2: Convert to fraction form
    361,891.20/542,840.70 = 109,173.87/x
  3. Step 3: Cross multiply
    361,891.20x = 542,840.70 × 109,173.87
  4. Step 4: Simplify right side
    361,891.20x = 59,264,020,012.51
  5. Step 5: Solve for x
    x = 59,264,020,012.51/361,891.20
  6. Step 6: Final answer
    x = 163,761.98

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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.