Home / 236,318.76-326,109.60-128,889.36

Finding the Fourth Proportional to 236,318.76, 326,109.60 and 128,889.36

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Solution

The fourth proportional to 236,318.76, 326,109.60 and 128,889.36 is: 177,861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,318.76 : 326,109.60 = 128,889.36 : x
  2. Step 2: Convert to fraction form
    236,318.76/326,109.60 = 128,889.36/x
  3. Step 3: Cross multiply
    236,318.76x = 326,109.60 × 128,889.36
  4. Step 4: Simplify right side
    236,318.76x = 42,032,057,633.86
  5. Step 5: Solve for x
    x = 42,032,057,633.86/236,318.76
  6. Step 6: Final answer
    x = 177,861.71

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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.