Home / 158,819.71-219,171.34-86,222.55

Finding the Fourth Proportional to 158,819.71, 219,171.34 and 86,222.55

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Solution

The fourth proportional to 158,819.71, 219,171.34 and 86,222.55 is: 118,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,819.71 : 219,171.34 = 86,222.55 : x
  2. Step 2: Convert to fraction form
    158,819.71/219,171.34 = 86,222.55/x
  3. Step 3: Cross multiply
    158,819.71x = 219,171.34 × 86,222.55
  4. Step 4: Simplify right side
    158,819.71x = 18,897,512,377.47
  5. Step 5: Solve for x
    x = 18,897,512,377.47/158,819.71
  6. Step 6: Final answer
    x = 118,987.20

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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.