Home / 185,485.62-278,264.51-78,868.36

Finding the Fourth Proportional to 185,485.62, 278,264.51 and 78,868.36

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Solution

The fourth proportional to 185,485.62, 278,264.51 and 78,868.36 is: 118,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,485.62 : 278,264.51 = 78,868.36 : x
  2. Step 2: Convert to fraction form
    185,485.62/278,264.51 = 78,868.36/x
  3. Step 3: Cross multiply
    185,485.62x = 278,264.51 × 78,868.36
  4. Step 4: Simplify right side
    185,485.62x = 21,946,263,764.24
  5. Step 5: Solve for x
    x = 21,946,263,764.24/185,485.62
  6. Step 6: Final answer
    x = 118,317.87

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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.