Home / 203,106.78-280,282.86-112,457.34

Finding the Fourth Proportional to 203,106.78, 280,282.86 and 112,457.34

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Solution

The fourth proportional to 203,106.78, 280,282.86 and 112,457.34 is: 155,188.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,106.78 : 280,282.86 = 112,457.34 : x
  2. Step 2: Convert to fraction form
    203,106.78/280,282.86 = 112,457.34/x
  3. Step 3: Cross multiply
    203,106.78x = 280,282.86 × 112,457.34
  4. Step 4: Simplify right side
    203,106.78x = 31,519,864,883.19
  5. Step 5: Solve for x
    x = 31,519,864,883.19/203,106.78
  6. Step 6: Final answer
    x = 155,188.64

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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.