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Finding the Fourth Proportional to 154,525.44, 213,208.56 and 87,457.44

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Solution

The fourth proportional to 154,525.44, 213,208.56 and 87,457.44 is: 120,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,525.44 : 213,208.56 = 87,457.44 : x
  2. Step 2: Convert to fraction form
    154,525.44/213,208.56 = 87,457.44/x
  3. Step 3: Cross multiply
    154,525.44x = 213,208.56 × 87,457.44
  4. Step 4: Simplify right side
    154,525.44x = 18,646,674,843.69
  5. Step 5: Solve for x
    x = 18,646,674,843.69/154,525.44
  6. Step 6: Final answer
    x = 120,670.58

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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.