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Finding the Fourth Proportional to 150,546.76, 207,739.56 and 86,905.06

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Solution

The fourth proportional to 150,546.76, 207,739.56 and 86,905.06 is: 119,920.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,546.76 : 207,739.56 = 86,905.06 : x
  2. Step 2: Convert to fraction form
    150,546.76/207,739.56 = 86,905.06/x
  3. Step 3: Cross multiply
    150,546.76x = 207,739.56 × 86,905.06
  4. Step 4: Simplify right side
    150,546.76x = 18,053,618,926.17
  5. Step 5: Solve for x
    x = 18,053,618,926.17/150,546.76
  6. Step 6: Final answer
    x = 119,920.34

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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.