Home / 185,505.20-278,411.40-85,818.80

Finding the Fourth Proportional to 185,505.20, 278,411.40 and 85,818.80

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Solution

The fourth proportional to 185,505.20, 278,411.40 and 85,818.80 is: 128,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,505.20 : 278,411.40 = 85,818.80 : x
  2. Step 2: Convert to fraction form
    185,505.20/278,411.40 = 85,818.80/x
  3. Step 3: Cross multiply
    185,505.20x = 278,411.40 × 85,818.80
  4. Step 4: Simplify right side
    185,505.20x = 23,892,932,254.32
  5. Step 5: Solve for x
    x = 23,892,932,254.32/185,505.20
  6. Step 6: Final answer
    x = 128,799.26

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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.