Home / 154,679.23-213,453.78-90,144.35

Finding the Fourth Proportional to 154,679.23, 213,453.78 and 90,144.35

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Solution

The fourth proportional to 154,679.23, 213,453.78 and 90,144.35 is: 124,397.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,679.23 : 213,453.78 = 90,144.35 : x
  2. Step 2: Convert to fraction form
    154,679.23/213,453.78 = 90,144.35/x
  3. Step 3: Cross multiply
    154,679.23x = 213,453.78 × 90,144.35
  4. Step 4: Simplify right side
    154,679.23x = 19,241,652,253.14
  5. Step 5: Solve for x
    x = 19,241,652,253.14/154,679.23
  6. Step 6: Final answer
    x = 124,397.13

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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.