Home / 163,397.39-225,511.09-91,782.86

Finding the Fourth Proportional to 163,397.39, 225,511.09 and 91,782.86

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Solution

The fourth proportional to 163,397.39, 225,511.09 and 91,782.86 is: 126,673.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,397.39 : 225,511.09 = 91,782.86 : x
  2. Step 2: Convert to fraction form
    163,397.39/225,511.09 = 91,782.86/x
  3. Step 3: Cross multiply
    163,397.39x = 225,511.09 × 91,782.86
  4. Step 4: Simplify right side
    163,397.39x = 20,698,051,444.90
  5. Step 5: Solve for x
    x = 20,698,051,444.90/163,397.39
  6. Step 6: Final answer
    x = 126,673.09

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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.