Home / 154,678.16-213,469.60-90,143.84

Finding the Fourth Proportional to 154,678.16, 213,469.60 and 90,143.84

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Solution

The fourth proportional to 154,678.16, 213,469.60 and 90,143.84 is: 124,406.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,678.16 : 213,469.60 = 90,143.84 : x
  2. Step 2: Convert to fraction form
    154,678.16/213,469.60 = 90,143.84/x
  3. Step 3: Cross multiply
    154,678.16x = 213,469.60 × 90,143.84
  4. Step 4: Simplify right side
    154,678.16x = 19,242,969,467.26
  5. Step 5: Solve for x
    x = 19,242,969,467.26/154,678.16
  6. Step 6: Final answer
    x = 124,406.51

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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.