Home / 112,739.31-155,684.84-84,395.79

Finding the Fourth Proportional to 112,739.31, 155,684.84 and 84,395.79

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Solution

The fourth proportional to 112,739.31, 155,684.84 and 84,395.79 is: 116,544.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,739.31 : 155,684.84 = 84,395.79 : x
  2. Step 2: Convert to fraction form
    112,739.31/155,684.84 = 84,395.79/x
  3. Step 3: Cross multiply
    112,739.31x = 155,684.84 × 84,395.79
  4. Step 4: Simplify right side
    112,739.31x = 13,139,144,640.84
  5. Step 5: Solve for x
    x = 13,139,144,640.84/112,739.31
  6. Step 6: Final answer
    x = 116,544.48

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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.