Home / 154,821.70-213,673.71-91,165.42

Finding the Fourth Proportional to 154,821.70, 213,673.71 and 91,165.42

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Solution

The fourth proportional to 154,821.70, 213,673.71 and 91,165.42 is: 125,819.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,821.70 : 213,673.71 = 91,165.42 : x
  2. Step 2: Convert to fraction form
    154,821.70/213,673.71 = 91,165.42/x
  3. Step 3: Cross multiply
    154,821.70x = 213,673.71 × 91,165.42
  4. Step 4: Simplify right side
    154,821.70x = 19,479,653,515.11
  5. Step 5: Solve for x
    x = 19,479,653,515.11/154,821.70
  6. Step 6: Final answer
    x = 125,819.92

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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.