Home / 91,533.60-136,921.28-85,934.88

Finding the Fourth Proportional to 91,533.60, 136,921.28 and 85,934.88

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Solution

The fourth proportional to 91,533.60, 136,921.28 and 85,934.88 is: 128,546.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,533.60 : 136,921.28 = 85,934.88 : x
  2. Step 2: Convert to fraction form
    91,533.60/136,921.28 = 85,934.88/x
  3. Step 3: Cross multiply
    91,533.60x = 136,921.28 × 85,934.88
  4. Step 4: Simplify right side
    91,533.60x = 11,766,313,766.25
  5. Step 5: Solve for x
    x = 11,766,313,766.25/91,533.60
  6. Step 6: Final answer
    x = 128,546.39

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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.