Home / 185,641.35-278,417.41-85,705.56

Finding the Fourth Proportional to 185,641.35, 278,417.41 and 85,705.56

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Solution

The fourth proportional to 185,641.35, 278,417.41 and 85,705.56 is: 128,537.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,641.35 : 278,417.41 = 85,705.56 : x
  2. Step 2: Convert to fraction form
    185,641.35/278,417.41 = 85,705.56/x
  3. Step 3: Cross multiply
    185,641.35x = 278,417.41 × 85,705.56
  4. Step 4: Simplify right side
    185,641.35x = 23,861,920,037.80
  5. Step 5: Solve for x
    x = 23,861,920,037.80/185,641.35
  6. Step 6: Final answer
    x = 128,537.74

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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.