Home / 127,669.20-191,503.80-108,642.30

Finding the Fourth Proportional to 127,669.20, 191,503.80 and 108,642.30

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Solution

The fourth proportional to 127,669.20, 191,503.80 and 108,642.30 is: 162,963.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,669.20 : 191,503.80 = 108,642.30 : x
  2. Step 2: Convert to fraction form
    127,669.20/191,503.80 = 108,642.30/x
  3. Step 3: Cross multiply
    127,669.20x = 191,503.80 × 108,642.30
  4. Step 4: Simplify right side
    127,669.20x = 20,805,413,290.74
  5. Step 5: Solve for x
    x = 20,805,413,290.74/127,669.20
  6. Step 6: Final answer
    x = 162,963.45

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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.