Home / 154,886.33-213,725.66-86,889.20

Finding the Fourth Proportional to 154,886.33, 213,725.66 and 86,889.20

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Solution

The fourth proportional to 154,886.33, 213,725.66 and 86,889.20 is: 119,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,886.33 : 213,725.66 = 86,889.20 : x
  2. Step 2: Convert to fraction form
    154,886.33/213,725.66 = 86,889.20/x
  3. Step 3: Cross multiply
    154,886.33x = 213,725.66 × 86,889.20
  4. Step 4: Simplify right side
    154,886.33x = 18,570,450,113.80
  5. Step 5: Solve for x
    x = 18,570,450,113.80/154,886.33
  6. Step 6: Final answer
    x = 119,897.28

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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.