Home / 203,109.32-280,271.34-121,421.42

Finding the Fourth Proportional to 203,109.32, 280,271.34 and 121,421.42

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Solution

The fourth proportional to 203,109.32, 280,271.34 and 121,421.42 is: 167,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,109.32 : 280,271.34 = 121,421.42 : x
  2. Step 2: Convert to fraction form
    203,109.32/280,271.34 = 121,421.42/x
  3. Step 3: Cross multiply
    203,109.32x = 280,271.34 × 121,421.42
  4. Step 4: Simplify right side
    203,109.32x = 34,030,944,788.78
  5. Step 5: Solve for x
    x = 34,030,944,788.78/203,109.32
  6. Step 6: Final answer
    x = 167,549.90

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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.