Home / 145,167.36-200,333.53-80,642.44

Finding the Fourth Proportional to 145,167.36, 200,333.53 and 80,642.44

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Solution

The fourth proportional to 145,167.36, 200,333.53 and 80,642.44 is: 111,287.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,167.36 : 200,333.53 = 80,642.44 : x
  2. Step 2: Convert to fraction form
    145,167.36/200,333.53 = 80,642.44/x
  3. Step 3: Cross multiply
    145,167.36x = 200,333.53 × 80,642.44
  4. Step 4: Simplify right side
    145,167.36x = 16,155,383,670.55
  5. Step 5: Solve for x
    x = 16,155,383,670.55/145,167.36
  6. Step 6: Final answer
    x = 111,287.99

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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.