Home / 203,503.05-280,848.60-112,867.65

Finding the Fourth Proportional to 203,503.05, 280,848.60 and 112,867.65

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Solution

The fourth proportional to 203,503.05, 280,848.60 and 112,867.65 is: 155,765.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,503.05 : 280,848.60 = 112,867.65 : x
  2. Step 2: Convert to fraction form
    203,503.05/280,848.60 = 112,867.65/x
  3. Step 3: Cross multiply
    203,503.05x = 280,848.60 × 112,867.65
  4. Step 4: Simplify right side
    203,503.05x = 31,698,721,487.79
  5. Step 5: Solve for x
    x = 31,698,721,487.79/203,503.05
  6. Step 6: Final answer
    x = 155,765.34

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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.