Home / 154,910.12-213,792.35-86,945.45

Finding the Fourth Proportional to 154,910.12, 213,792.35 and 86,945.45

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Solution

The fourth proportional to 154,910.12, 213,792.35 and 86,945.45 is: 119,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,910.12 : 213,792.35 = 86,945.45 : x
  2. Step 2: Convert to fraction form
    154,910.12/213,792.35 = 86,945.45/x
  3. Step 3: Cross multiply
    154,910.12x = 213,792.35 × 86,945.45
  4. Step 4: Simplify right side
    154,910.12x = 18,588,270,573.62
  5. Step 5: Solve for x
    x = 18,588,270,573.62/154,910.12
  6. Step 6: Final answer
    x = 119,993.91

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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.