Home / 281,119.49-421,678.91-91,579.57

Finding the Fourth Proportional to 281,119.49, 421,678.91 and 91,579.57

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Solution

The fourth proportional to 281,119.49, 421,678.91 and 91,579.57 is: 137,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,119.49 : 421,678.91 = 91,579.57 : x
  2. Step 2: Convert to fraction form
    281,119.49/421,678.91 = 91,579.57/x
  3. Step 3: Cross multiply
    281,119.49x = 421,678.91 × 91,579.57
  4. Step 4: Simplify right side
    281,119.49x = 38,617,172,430.62
  5. Step 5: Solve for x
    x = 38,617,172,430.62/281,119.49
  6. Step 6: Final answer
    x = 137,369.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.