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Finding the Fourth Proportional to 203,559.09, 280,916.04 and 112,912.10

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Solution

The fourth proportional to 203,559.09, 280,916.04 and 112,912.10 is: 155,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,559.09 : 280,916.04 = 112,912.10 : x
  2. Step 2: Convert to fraction form
    203,559.09/280,916.04 = 112,912.10/x
  3. Step 3: Cross multiply
    203,559.09x = 280,916.04 × 112,912.10
  4. Step 4: Simplify right side
    203,559.09x = 31,718,820,000.08
  5. Step 5: Solve for x
    x = 31,718,820,000.08/203,559.09
  6. Step 6: Final answer
    x = 155,821.19

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1.5x scale

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.