Home / 154,808.98-213,438.62-100,264.78

Finding the Fourth Proportional to 154,808.98, 213,438.62 and 100,264.78

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Solution

The fourth proportional to 154,808.98, 213,438.62 and 100,264.78 is: 138,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,808.98 : 213,438.62 = 100,264.78 : x
  2. Step 2: Convert to fraction form
    154,808.98/213,438.62 = 100,264.78/x
  3. Step 3: Cross multiply
    154,808.98x = 213,438.62 × 100,264.78
  4. Step 4: Simplify right side
    154,808.98x = 21,400,376,277.80
  5. Step 5: Solve for x
    x = 21,400,376,277.80/154,808.98
  6. Step 6: Final answer
    x = 138,237.31

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1.5x scale

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.