Home / 104,839.30-144,816.69-77,670.55

Finding the Fourth Proportional to 104,839.30, 144,816.69 and 77,670.55

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Solution

The fourth proportional to 104,839.30, 144,816.69 and 77,670.55 is: 107,287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,839.30 : 144,816.69 = 77,670.55 : x
  2. Step 2: Convert to fraction form
    104,839.30/144,816.69 = 77,670.55/x
  3. Step 3: Cross multiply
    104,839.30x = 144,816.69 × 77,670.55
  4. Step 4: Simplify right side
    104,839.30x = 11,247,991,961.48
  5. Step 5: Solve for x
    x = 11,247,991,961.48/104,839.30
  6. Step 6: Final answer
    x = 107,287.93

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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.