Home / 154,556.40-213,295.85-86,569.40

Finding the Fourth Proportional to 154,556.40, 213,295.85 and 86,569.40

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Solution

The fourth proportional to 154,556.40, 213,295.85 and 86,569.40 is: 119,470.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,556.40 : 213,295.85 = 86,569.40 : x
  2. Step 2: Convert to fraction form
    154,556.40/213,295.85 = 86,569.40/x
  3. Step 3: Cross multiply
    154,556.40x = 213,295.85 × 86,569.40
  4. Step 4: Simplify right side
    154,556.40x = 18,464,892,257.66
  5. Step 5: Solve for x
    x = 18,464,892,257.66/154,556.40
  6. Step 6: Final answer
    x = 119,470.25

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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.