Home / 185,650.50-278,431.08-85,714.68

Finding the Fourth Proportional to 185,650.50, 278,431.08 and 85,714.68

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Solution

The fourth proportional to 185,650.50, 278,431.08 and 85,714.68 is: 128,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,650.50 : 278,431.08 = 85,714.68 : x
  2. Step 2: Convert to fraction form
    185,650.50/278,431.08 = 85,714.68/x
  3. Step 3: Cross multiply
    185,650.50x = 278,431.08 × 85,714.68
  4. Step 4: Simplify right side
    185,650.50x = 23,865,630,924.25
  5. Step 5: Solve for x
    x = 23,865,630,924.25/185,650.50
  6. Step 6: Final answer
    x = 128,551.40

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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.