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Finding the Fourth Proportional to 103,832.32, 155,731.44 and 28,957.54

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Solution

The fourth proportional to 103,832.32, 155,731.44 and 28,957.54 is: 43,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,832.32 : 155,731.44 = 28,957.54 : x
  2. Step 2: Convert to fraction form
    103,832.32/155,731.44 = 28,957.54/x
  3. Step 3: Cross multiply
    103,832.32x = 155,731.44 × 28,957.54
  4. Step 4: Simplify right side
    103,832.32x = 4,509,599,403.06
  5. Step 5: Solve for x
    x = 4,509,599,403.06/103,832.32
  6. Step 6: Final answer
    x = 43,431.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.