Home / 185,855.90-256,487.11-105,281.64

Finding the Fourth Proportional to 185,855.90, 256,487.11 and 105,281.64

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Solution

The fourth proportional to 185,855.90, 256,487.11 and 105,281.64 is: 145,292.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,855.90 : 256,487.11 = 105,281.64 : x
  2. Step 2: Convert to fraction form
    185,855.90/256,487.11 = 105,281.64/x
  3. Step 3: Cross multiply
    185,855.90x = 256,487.11 × 105,281.64
  4. Step 4: Simplify right side
    185,855.90x = 27,003,383,316.46
  5. Step 5: Solve for x
    x = 27,003,383,316.46/185,855.90
  6. Step 6: Final answer
    x = 145,292.05

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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.