Home / 131,403.60-181,353.78-86,119.92

Finding the Fourth Proportional to 131,403.60, 181,353.78 and 86,119.92

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Solution

The fourth proportional to 131,403.60, 181,353.78 and 86,119.92 is: 118,856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,403.60 : 181,353.78 = 86,119.92 : x
  2. Step 2: Convert to fraction form
    131,403.60/181,353.78 = 86,119.92/x
  3. Step 3: Cross multiply
    131,403.60x = 181,353.78 × 86,119.92
  4. Step 4: Simplify right side
    131,403.60x = 15,618,173,025.30
  5. Step 5: Solve for x
    x = 15,618,173,025.30/131,403.60
  6. Step 6: Final answer
    x = 118,856.51

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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.