Home / 203,565.08-280,921.37-111,683.76

Finding the Fourth Proportional to 203,565.08, 280,921.37 and 111,683.76

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Solution

The fourth proportional to 203,565.08, 280,921.37 and 111,683.76 is: 154,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,565.08 : 280,921.37 = 111,683.76 : x
  2. Step 2: Convert to fraction form
    203,565.08/280,921.37 = 111,683.76/x
  3. Step 3: Cross multiply
    203,565.08x = 280,921.37 × 111,683.76
  4. Step 4: Simplify right side
    203,565.08x = 31,374,354,307.53
  5. Step 5: Solve for x
    x = 31,374,354,307.53/203,565.08
  6. Step 6: Final answer
    x = 154,124.45

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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.