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Finding the Fourth Proportional to 100,342.76, 150,539.13 and 70,818.26

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Solution

The fourth proportional to 100,342.76, 150,539.13 and 70,818.26 is: 106,245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,342.76 : 150,539.13 = 70,818.26 : x
  2. Step 2: Convert to fraction form
    100,342.76/150,539.13 = 70,818.26/x
  3. Step 3: Cross multiply
    100,342.76x = 150,539.13 × 70,818.26
  4. Step 4: Simplify right side
    100,342.76x = 10,660,918,495.82
  5. Step 5: Solve for x
    x = 10,660,918,495.82/100,342.76
  6. Step 6: Final answer
    x = 106,245.02

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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.