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Finding the Fourth Proportional to 185,211.48, 255,591 and 100,328.76

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Solution

The fourth proportional to 185,211.48, 255,591 and 100,328.76 is: 138,453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,211.48 : 255,591 = 100,328.76 : x
  2. Step 2: Convert to fraction form
    185,211.48/255,591 = 100,328.76/x
  3. Step 3: Cross multiply
    185,211.48x = 255,591 × 100,328.76
  4. Step 4: Simplify right side
    185,211.48x = 25,643,128,097.16
  5. Step 5: Solve for x
    x = 25,643,128,097.16/185,211.48
  6. Step 6: Final answer
    x = 138,453.23

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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.