Home / 154,966.42-213,826.64-86,986.25

Finding the Fourth Proportional to 154,966.42, 213,826.64 and 86,986.25

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Solution

The fourth proportional to 154,966.42, 213,826.64 and 86,986.25 is: 120,025.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,966.42 : 213,826.64 = 86,986.25 : x
  2. Step 2: Convert to fraction form
    154,966.42/213,826.64 = 86,986.25/x
  3. Step 3: Cross multiply
    154,966.42x = 213,826.64 × 86,986.25
  4. Step 4: Simplify right side
    154,966.42x = 18,599,978,064.26
  5. Step 5: Solve for x
    x = 18,599,978,064.26/154,966.42
  6. Step 6: Final answer
    x = 120,025.86

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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.