Home / 154,809.23-213,438.98-100,265.03

Finding the Fourth Proportional to 154,809.23, 213,438.98 and 100,265.03

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Solution

The fourth proportional to 154,809.23, 213,438.98 and 100,265.03 is: 138,237.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,809.23 : 213,438.98 = 100,265.03 : x
  2. Step 2: Convert to fraction form
    154,809.23/213,438.98 = 100,265.03/x
  3. Step 3: Cross multiply
    154,809.23x = 213,438.98 × 100,265.03
  4. Step 4: Simplify right side
    154,809.23x = 21,400,464,164.35
  5. Step 5: Solve for x
    x = 21,400,464,164.35/154,809.23
  6. Step 6: Final answer
    x = 138,237.65

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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.