Home / 154,623.40-213,376.68-90,965.30

Finding the Fourth Proportional to 154,623.40, 213,376.68 and 90,965.30

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Solution

The fourth proportional to 154,623.40, 213,376.68 and 90,965.30 is: 125,529.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,623.40 : 213,376.68 = 90,965.30 : x
  2. Step 2: Convert to fraction form
    154,623.40/213,376.68 = 90,965.30/x
  3. Step 3: Cross multiply
    154,623.40x = 213,376.68 × 90,965.30
  4. Step 4: Simplify right side
    154,623.40x = 19,409,872,642.32
  5. Step 5: Solve for x
    x = 19,409,872,642.32/154,623.40
  6. Step 6: Final answer
    x = 125,529.98

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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.