Home / 96,740.20-145,110.30-85,853.80

Finding the Fourth Proportional to 96,740.20, 145,110.30 and 85,853.80

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Solution

The fourth proportional to 96,740.20, 145,110.30 and 85,853.80 is: 128,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,740.20 : 145,110.30 = 85,853.80 : x
  2. Step 2: Convert to fraction form
    96,740.20/145,110.30 = 85,853.80/x
  3. Step 3: Cross multiply
    96,740.20x = 145,110.30 × 85,853.80
  4. Step 4: Simplify right side
    96,740.20x = 12,458,270,674.14
  5. Step 5: Solve for x
    x = 12,458,270,674.14/96,740.20
  6. Step 6: Final answer
    x = 128,780.70

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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.