Home / 154,069.12-212,625.30-90,383.68

Finding the Fourth Proportional to 154,069.12, 212,625.30 and 90,383.68

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Solution

The fourth proportional to 154,069.12, 212,625.30 and 90,383.68 is: 124,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,069.12 : 212,625.30 = 90,383.68 : x
  2. Step 2: Convert to fraction form
    154,069.12/212,625.30 = 90,383.68/x
  3. Step 3: Cross multiply
    154,069.12x = 212,625.30 × 90,383.68
  4. Step 4: Simplify right side
    154,069.12x = 19,217,857,075.10
  5. Step 5: Solve for x
    x = 19,217,857,075.10/154,069.12
  6. Step 6: Final answer
    x = 124,735.29

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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.