Home / 127,822.40-191,733.60-81,281.60

Finding the Fourth Proportional to 127,822.40, 191,733.60 and 81,281.60

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Solution

The fourth proportional to 127,822.40, 191,733.60 and 81,281.60 is: 121,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,822.40 : 191,733.60 = 81,281.60 : x
  2. Step 2: Convert to fraction form
    127,822.40/191,733.60 = 81,281.60/x
  3. Step 3: Cross multiply
    127,822.40x = 191,733.60 × 81,281.60
  4. Step 4: Simplify right side
    127,822.40x = 15,584,413,781.76
  5. Step 5: Solve for x
    x = 15,584,413,781.76/127,822.40
  6. Step 6: Final answer
    x = 121,922.40

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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.