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Finding the Fourth Proportional to 120,783.60, 181,175.40 and 41,905.80

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Solution

The fourth proportional to 120,783.60, 181,175.40 and 41,905.80 is: 62,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,783.60 : 181,175.40 = 41,905.80 : x
  2. Step 2: Convert to fraction form
    120,783.60/181,175.40 = 41,905.80/x
  3. Step 3: Cross multiply
    120,783.60x = 181,175.40 × 41,905.80
  4. Step 4: Simplify right side
    120,783.60x = 7,592,300,077.32
  5. Step 5: Solve for x
    x = 7,592,300,077.32/120,783.60
  6. Step 6: Final answer
    x = 62,858.70

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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.