Home / 155,553.12-214,660.98-87,570.18

Finding the Fourth Proportional to 155,553.12, 214,660.98 and 87,570.18

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Solution

The fourth proportional to 155,553.12, 214,660.98 and 87,570.18 is: 120,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,553.12 : 214,660.98 = 87,570.18 : x
  2. Step 2: Convert to fraction form
    155,553.12/214,660.98 = 87,570.18/x
  3. Step 3: Cross multiply
    155,553.12x = 214,660.98 × 87,570.18
  4. Step 4: Simplify right side
    155,553.12x = 18,797,900,657.58
  5. Step 5: Solve for x
    x = 18,797,900,657.58/155,553.12
  6. Step 6: Final answer
    x = 120,845.54

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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.