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Finding the Fourth Proportional to 185,556.80, 278,270.40 and 96,780.80

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Solution

The fourth proportional to 185,556.80, 278,270.40 and 96,780.80 is: 145,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,556.80 : 278,270.40 = 96,780.80 : x
  2. Step 2: Convert to fraction form
    185,556.80/278,270.40 = 96,780.80/x
  3. Step 3: Cross multiply
    185,556.80x = 278,270.40 × 96,780.80
  4. Step 4: Simplify right side
    185,556.80x = 26,931,231,928.32
  5. Step 5: Solve for x
    x = 26,931,231,928.32/185,556.80
  6. Step 6: Final answer
    x = 145,137.40

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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.