Home / 127,929.60-191,894.40-81,273.60

Finding the Fourth Proportional to 127,929.60, 191,894.40 and 81,273.60

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Solution

The fourth proportional to 127,929.60, 191,894.40 and 81,273.60 is: 121,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,929.60 : 191,894.40 = 81,273.60 : x
  2. Step 2: Convert to fraction form
    127,929.60/191,894.40 = 81,273.60/x
  3. Step 3: Cross multiply
    127,929.60x = 191,894.40 × 81,273.60
  4. Step 4: Simplify right side
    127,929.60x = 15,595,948,707.84
  5. Step 5: Solve for x
    x = 15,595,948,707.84/127,929.60
  6. Step 6: Final answer
    x = 121,910.40

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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.