Home / 112,385.69-168,661.73-53,221.49

Finding the Fourth Proportional to 112,385.69, 168,661.73 and 53,221.49

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Solution

The fourth proportional to 112,385.69, 168,661.73 and 53,221.49 is: 79,871.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,385.69 : 168,661.73 = 53,221.49 : x
  2. Step 2: Convert to fraction form
    112,385.69/168,661.73 = 53,221.49/x
  3. Step 3: Cross multiply
    112,385.69x = 168,661.73 × 53,221.49
  4. Step 4: Simplify right side
    112,385.69x = 8,976,428,576.58
  5. Step 5: Solve for x
    x = 8,976,428,576.58/112,385.69
  6. Step 6: Final answer
    x = 79,871.63

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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.