Home / 154,807.73-213,436.91-100,263.53

Finding the Fourth Proportional to 154,807.73, 213,436.91 and 100,263.53

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Solution

The fourth proportional to 154,807.73, 213,436.91 and 100,263.53 is: 138,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,807.73 : 213,436.91 = 100,263.53 : x
  2. Step 2: Convert to fraction form
    154,807.73/213,436.91 = 100,263.53/x
  3. Step 3: Cross multiply
    154,807.73x = 213,436.91 × 100,263.53
  4. Step 4: Simplify right side
    154,807.73x = 21,399,936,460.39
  5. Step 5: Solve for x
    x = 21,399,936,460.39/154,807.73
  6. Step 6: Final answer
    x = 138,235.59

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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.