Home / 78,220.51-116,324.45-75,729.37

Finding the Fourth Proportional to 78,220.51, 116,324.45 and 75,729.37

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Solution

The fourth proportional to 78,220.51, 116,324.45 and 75,729.37 is: 112,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,220.51 : 116,324.45 = 75,729.37 : x
  2. Step 2: Convert to fraction form
    78,220.51/116,324.45 = 75,729.37/x
  3. Step 3: Cross multiply
    78,220.51x = 116,324.45 × 75,729.37
  4. Step 4: Simplify right side
    78,220.51x = 8,809,177,314.10
  5. Step 5: Solve for x
    x = 8,809,177,314.10/78,220.51
  6. Step 6: Final answer
    x = 112,619.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.