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Finding the Fourth Proportional to 133,054.25, 183,645.72 and 87,740.42

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Solution

The fourth proportional to 133,054.25, 183,645.72 and 87,740.42 is: 121,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,054.25 : 183,645.72 = 87,740.42 : x
  2. Step 2: Convert to fraction form
    133,054.25/183,645.72 = 87,740.42/x
  3. Step 3: Cross multiply
    133,054.25x = 183,645.72 × 87,740.42
  4. Step 4: Simplify right side
    133,054.25x = 16,113,152,165.30
  5. Step 5: Solve for x
    x = 16,113,152,165.30/133,054.25
  6. Step 6: Final answer
    x = 121,102.12

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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.