Home / 102,145.21-140,972.85-61,873.03

Finding the Fourth Proportional to 102,145.21, 140,972.85 and 61,873.03

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Solution

The fourth proportional to 102,145.21, 140,972.85 and 61,873.03 is: 85,392.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,145.21 : 140,972.85 = 61,873.03 : x
  2. Step 2: Convert to fraction form
    102,145.21/140,972.85 = 61,873.03/x
  3. Step 3: Cross multiply
    102,145.21x = 140,972.85 × 61,873.03
  4. Step 4: Simplify right side
    102,145.21x = 8,722,417,377.24
  5. Step 5: Solve for x
    x = 8,722,417,377.24/102,145.21
  6. Step 6: Final answer
    x = 85,392.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.