Home / 91,180.96-136,771.44-72,829.60

Finding the Fourth Proportional to 91,180.96, 136,771.44 and 72,829.60

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Solution

The fourth proportional to 91,180.96, 136,771.44 and 72,829.60 is: 109,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,180.96 : 136,771.44 = 72,829.60 : x
  2. Step 2: Convert to fraction form
    91,180.96/136,771.44 = 72,829.60/x
  3. Step 3: Cross multiply
    91,180.96x = 136,771.44 × 72,829.60
  4. Step 4: Simplify right side
    91,180.96x = 9,961,009,266.62
  5. Step 5: Solve for x
    x = 9,961,009,266.62/91,180.96
  6. Step 6: Final answer
    x = 109,244.40

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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.