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Finding the Fourth Proportional to 203,580.72, 280,941.06 and 112,950.50

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Solution

The fourth proportional to 203,580.72, 280,941.06 and 112,950.50 is: 155,871.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,580.72 : 280,941.06 = 112,950.50 : x
  2. Step 2: Convert to fraction form
    203,580.72/280,941.06 = 112,950.50/x
  3. Step 3: Cross multiply
    203,580.72x = 280,941.06 × 112,950.50
  4. Step 4: Simplify right side
    203,580.72x = 31,732,433,197.53
  5. Step 5: Solve for x
    x = 31,732,433,197.53/203,580.72
  6. Step 6: Final answer
    x = 155,871.50

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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.