Home / 140,894.10-211,528.80-81,772.20

Finding the Fourth Proportional to 140,894.10, 211,528.80 and 81,772.20

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Solution

The fourth proportional to 140,894.10, 211,528.80 and 81,772.20 is: 122,767.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,894.10 : 211,528.80 = 81,772.20 : x
  2. Step 2: Convert to fraction form
    140,894.10/211,528.80 = 81,772.20/x
  3. Step 3: Cross multiply
    140,894.10x = 211,528.80 × 81,772.20
  4. Step 4: Simplify right side
    140,894.10x = 17,297,175,339.36
  5. Step 5: Solve for x
    x = 17,297,175,339.36/140,894.10
  6. Step 6: Final answer
    x = 122,767.21

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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.