Home / 140,167.28-193,431.84-76,505.60

Finding the Fourth Proportional to 140,167.28, 193,431.84 and 76,505.60

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Solution

The fourth proportional to 140,167.28, 193,431.84 and 76,505.60 is: 105,578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,167.28 : 193,431.84 = 76,505.60 : x
  2. Step 2: Convert to fraction form
    140,167.28/193,431.84 = 76,505.60/x
  3. Step 3: Cross multiply
    140,167.28x = 193,431.84 × 76,505.60
  4. Step 4: Simplify right side
    140,167.28x = 14,798,618,978.30
  5. Step 5: Solve for x
    x = 14,798,618,978.30/140,167.28
  6. Step 6: Final answer
    x = 105,578.27

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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.