Home / 127,886.12-176,594.28-80,221.40

Finding the Fourth Proportional to 127,886.12, 176,594.28 and 80,221.40

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Solution

The fourth proportional to 127,886.12, 176,594.28 and 80,221.40 is: 110,775.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,886.12 : 176,594.28 = 80,221.40 : x
  2. Step 2: Convert to fraction form
    127,886.12/176,594.28 = 80,221.40/x
  3. Step 3: Cross multiply
    127,886.12x = 176,594.28 × 80,221.40
  4. Step 4: Simplify right side
    127,886.12x = 14,166,640,373.59
  5. Step 5: Solve for x
    x = 14,166,640,373.59/127,886.12
  6. Step 6: Final answer
    x = 110,775.43

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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.