Home / 163,221.86-225,250.26-91,607.60

Finding the Fourth Proportional to 163,221.86, 225,250.26 and 91,607.60

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Solution

The fourth proportional to 163,221.86, 225,250.26 and 91,607.60 is: 126,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,221.86 : 225,250.26 = 91,607.60 : x
  2. Step 2: Convert to fraction form
    163,221.86/225,250.26 = 91,607.60/x
  3. Step 3: Cross multiply
    163,221.86x = 225,250.26 × 91,607.60
  4. Step 4: Simplify right side
    163,221.86x = 20,634,635,717.98
  5. Step 5: Solve for x
    x = 20,634,635,717.98/163,221.86
  6. Step 6: Final answer
    x = 126,420.79

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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.