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Finding the Fourth Proportional to 185,431.80, 255,894.46 and 100,548.60

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Solution

The fourth proportional to 185,431.80, 255,894.46 and 100,548.60 is: 138,756.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,431.80 : 255,894.46 = 100,548.60 : x
  2. Step 2: Convert to fraction form
    185,431.80/255,894.46 = 100,548.60/x
  3. Step 3: Cross multiply
    185,431.80x = 255,894.46 × 100,548.60
  4. Step 4: Simplify right side
    185,431.80x = 25,729,829,700.76
  5. Step 5: Solve for x
    x = 25,729,829,700.76/185,431.80
  6. Step 6: Final answer
    x = 138,756.30

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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.