Home / 154,154.30-212,728.46-86,171.41

Finding the Fourth Proportional to 154,154.30, 212,728.46 and 86,171.41

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Solution

The fourth proportional to 154,154.30, 212,728.46 and 86,171.41 is: 118,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,154.30 : 212,728.46 = 86,171.41 : x
  2. Step 2: Convert to fraction form
    154,154.30/212,728.46 = 86,171.41/x
  3. Step 3: Cross multiply
    154,154.30x = 212,728.46 × 86,171.41
  4. Step 4: Simplify right side
    154,154.30x = 18,331,111,028.94
  5. Step 5: Solve for x
    x = 18,331,111,028.94/154,154.30
  6. Step 6: Final answer
    x = 118,914.04

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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.