Home / 203,543.55-280,923.74-112,928.72

Finding the Fourth Proportional to 203,543.55, 280,923.74 and 112,928.72

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Solution

The fourth proportional to 203,543.55, 280,923.74 and 112,928.72 is: 155,860.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,543.55 : 280,923.74 = 112,928.72 : x
  2. Step 2: Convert to fraction form
    203,543.55/280,923.74 = 112,928.72/x
  3. Step 3: Cross multiply
    203,543.55x = 280,923.74 × 112,928.72
  4. Step 4: Simplify right side
    203,543.55x = 31,724,356,406.55
  5. Step 5: Solve for x
    x = 31,724,356,406.55/203,543.55
  6. Step 6: Final answer
    x = 155,860.29

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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.