Home / 185,420.36-278,141.30-71,568.80

Finding the Fourth Proportional to 185,420.36, 278,141.30 and 71,568.80

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Solution

The fourth proportional to 185,420.36, 278,141.30 and 71,568.80 is: 107,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,420.36 : 278,141.30 = 71,568.80 : x
  2. Step 2: Convert to fraction form
    185,420.36/278,141.30 = 71,568.80/x
  3. Step 3: Cross multiply
    185,420.36x = 278,141.30 × 71,568.80
  4. Step 4: Simplify right side
    185,420.36x = 19,906,239,071.44
  5. Step 5: Solve for x
    x = 19,906,239,071.44/185,420.36
  6. Step 6: Final answer
    x = 107,357.35

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1.5x scale

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.