Home / 78,253.16-117,179.40-43,153.88

Finding the Fourth Proportional to 78,253.16, 117,179.40 and 43,153.88

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Solution

The fourth proportional to 78,253.16, 117,179.40 and 43,153.88 is: 64,620.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,253.16 : 117,179.40 = 43,153.88 : x
  2. Step 2: Convert to fraction form
    78,253.16/117,179.40 = 43,153.88/x
  3. Step 3: Cross multiply
    78,253.16x = 117,179.40 × 43,153.88
  4. Step 4: Simplify right side
    78,253.16x = 5,056,745,766.07
  5. Step 5: Solve for x
    x = 5,056,745,766.07/78,253.16
  6. Step 6: Final answer
    x = 64,620.34

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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.