Home / 185,055.72-255,376.86-100,172.76

Finding the Fourth Proportional to 185,055.72, 255,376.86 and 100,172.76

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Solution

The fourth proportional to 185,055.72, 255,376.86 and 100,172.76 is: 138,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,055.72 : 255,376.86 = 100,172.76 : x
  2. Step 2: Convert to fraction form
    185,055.72/255,376.86 = 100,172.76/x
  3. Step 3: Cross multiply
    185,055.72x = 255,376.86 × 100,172.76
  4. Step 4: Simplify right side
    185,055.72x = 25,581,804,906.33
  5. Step 5: Solve for x
    x = 25,581,804,906.33/185,055.72
  6. Step 6: Final answer
    x = 138,238.39

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1.5x scale

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.