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Finding the Fourth Proportional to 185,172.84, 255,539.88 and 100,290.60

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Solution

The fourth proportional to 185,172.84, 255,539.88 and 100,290.60 is: 138,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,172.84 : 255,539.88 = 100,290.60 : x
  2. Step 2: Convert to fraction form
    185,172.84/255,539.88 = 100,290.60/x
  3. Step 3: Cross multiply
    185,172.84x = 255,539.88 × 100,290.60
  4. Step 4: Simplify right side
    185,172.84x = 25,628,247,889.13
  5. Step 5: Solve for x
    x = 25,628,247,889.13/185,172.84
  6. Step 6: Final answer
    x = 138,401.77

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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.