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Finding the Fourth Proportional to 133,228.44, 183,774.80 and 87,890.32

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Solution

The fourth proportional to 133,228.44, 183,774.80 and 87,890.32 is: 121,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,228.44 : 183,774.80 = 87,890.32 : x
  2. Step 2: Convert to fraction form
    133,228.44/183,774.80 = 87,890.32/x
  3. Step 3: Cross multiply
    133,228.44x = 183,774.80 × 87,890.32
  4. Step 4: Simplify right side
    133,228.44x = 16,152,025,979.94
  5. Step 5: Solve for x
    x = 16,152,025,979.94/133,228.44
  6. Step 6: Final answer
    x = 121,235.57

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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.