Home / 115,687.54-173,333.04-77,665.60

Finding the Fourth Proportional to 115,687.54, 173,333.04 and 77,665.60

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Solution

The fourth proportional to 115,687.54, 173,333.04 and 77,665.60 is: 116,365.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,687.54 : 173,333.04 = 77,665.60 : x
  2. Step 2: Convert to fraction form
    115,687.54/173,333.04 = 77,665.60/x
  3. Step 3: Cross multiply
    115,687.54x = 173,333.04 × 77,665.60
  4. Step 4: Simplify right side
    115,687.54x = 13,462,014,551.42
  5. Step 5: Solve for x
    x = 13,462,014,551.42/115,687.54
  6. Step 6: Final answer
    x = 116,365.29

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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.