Home / 78,864.36-117,728.49-73,259.37

Finding the Fourth Proportional to 78,864.36, 117,728.49 and 73,259.37

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Solution

The fourth proportional to 78,864.36, 117,728.49 and 73,259.37 is: 109,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,864.36 : 117,728.49 = 73,259.37 : x
  2. Step 2: Convert to fraction form
    78,864.36/117,728.49 = 73,259.37/x
  3. Step 3: Cross multiply
    78,864.36x = 117,728.49 × 73,259.37
  4. Step 4: Simplify right side
    78,864.36x = 8,624,715,367.76
  5. Step 5: Solve for x
    x = 8,624,715,367.76/78,864.36
  6. Step 6: Final answer
    x = 109,361.38

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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.