Home / 154,678.86-213,452.93-90,143.91

Finding the Fourth Proportional to 154,678.86, 213,452.93 and 90,143.91

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Solution

The fourth proportional to 154,678.86, 213,452.93 and 90,143.91 is: 124,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,678.86 : 213,452.93 = 90,143.91 : x
  2. Step 2: Convert to fraction form
    154,678.86/213,452.93 = 90,143.91/x
  3. Step 3: Cross multiply
    154,678.86x = 213,452.93 × 90,143.91
  4. Step 4: Simplify right side
    154,678.86x = 19,241,481,260.44
  5. Step 5: Solve for x
    x = 19,241,481,260.44/154,678.86
  6. Step 6: Final answer
    x = 124,396.32

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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.