Home / 76,177.08-105,153.84-68,205.60

Finding the Fourth Proportional to 76,177.08, 105,153.84 and 68,205.60

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Solution

The fourth proportional to 76,177.08, 105,153.84 and 68,205.60 is: 94,150.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,177.08 : 105,153.84 = 68,205.60 : x
  2. Step 2: Convert to fraction form
    76,177.08/105,153.84 = 68,205.60/x
  3. Step 3: Cross multiply
    76,177.08x = 105,153.84 × 68,205.60
  4. Step 4: Simplify right side
    76,177.08x = 7,172,080,749.50
  5. Step 5: Solve for x
    x = 7,172,080,749.50/76,177.08
  6. Step 6: Final answer
    x = 94,150.11

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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.