Home / 154,171.97-212,758.90-86,192.72

Finding the Fourth Proportional to 154,171.97, 212,758.90 and 86,192.72

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Solution

The fourth proportional to 154,171.97, 212,758.90 and 86,192.72 is: 118,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,171.97 : 212,758.90 = 86,192.72 : x
  2. Step 2: Convert to fraction form
    154,171.97/212,758.90 = 86,192.72/x
  3. Step 3: Cross multiply
    154,171.97x = 212,758.90 × 86,192.72
  4. Step 4: Simplify right side
    154,171.97x = 18,338,268,295.21
  5. Step 5: Solve for x
    x = 18,338,268,295.21/154,171.97
  6. Step 6: Final answer
    x = 118,946.84

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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.