Home / 203,430.39-280,733.43-112,784.03

Finding the Fourth Proportional to 203,430.39, 280,733.43 and 112,784.03

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Solution

The fourth proportional to 203,430.39, 280,733.43 and 112,784.03 is: 155,641.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,430.39 : 280,733.43 = 112,784.03 : x
  2. Step 2: Convert to fraction form
    203,430.39/280,733.43 = 112,784.03/x
  3. Step 3: Cross multiply
    203,430.39x = 280,733.43 × 112,784.03
  4. Step 4: Simplify right side
    203,430.39x = 31,662,247,663.15
  5. Step 5: Solve for x
    x = 31,662,247,663.15/203,430.39
  6. Step 6: Final answer
    x = 155,641.68

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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.