Home / 118,827.60-178,241.40-76,837.20

Finding the Fourth Proportional to 118,827.60, 178,241.40 and 76,837.20

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Solution

The fourth proportional to 118,827.60, 178,241.40 and 76,837.20 is: 115,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,827.60 : 178,241.40 = 76,837.20 : x
  2. Step 2: Convert to fraction form
    118,827.60/178,241.40 = 76,837.20/x
  3. Step 3: Cross multiply
    118,827.60x = 178,241.40 × 76,837.20
  4. Step 4: Simplify right side
    118,827.60x = 13,695,570,100.08
  5. Step 5: Solve for x
    x = 13,695,570,100.08/118,827.60
  6. Step 6: Final answer
    x = 115,255.80

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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.