Home / 153,631.58-211,891.37-99,933.73

Finding the Fourth Proportional to 153,631.58, 211,891.37 and 99,933.73

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Solution

The fourth proportional to 153,631.58, 211,891.37 and 99,933.73 is: 137,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,631.58 : 211,891.37 = 99,933.73 : x
  2. Step 2: Convert to fraction form
    153,631.58/211,891.37 = 99,933.73/x
  3. Step 3: Cross multiply
    153,631.58x = 211,891.37 × 99,933.73
  4. Step 4: Simplify right side
    153,631.58x = 21,175,093,929.51
  5. Step 5: Solve for x
    x = 21,175,093,929.51/153,631.58
  6. Step 6: Final answer
    x = 137,830.35

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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.