Home / 128,416.25-177,214.71-71,059.73

Finding the Fourth Proportional to 128,416.25, 177,214.71 and 71,059.73

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Solution

The fourth proportional to 128,416.25, 177,214.71 and 71,059.73 is: 98,062.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,416.25 : 177,214.71 = 71,059.73 : x
  2. Step 2: Convert to fraction form
    128,416.25/177,214.71 = 71,059.73/x
  3. Step 3: Cross multiply
    128,416.25x = 177,214.71 × 71,059.73
  4. Step 4: Simplify right side
    128,416.25x = 12,592,829,444.63
  5. Step 5: Solve for x
    x = 12,592,829,444.63/128,416.25
  6. Step 6: Final answer
    x = 98,062.59

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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.