Home / 101,688.21-152,534.34-71,579.30

Finding the Fourth Proportional to 101,688.21, 152,534.34 and 71,579.30

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Solution

The fourth proportional to 101,688.21, 152,534.34 and 71,579.30 is: 107,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,688.21 : 152,534.34 = 71,579.30 : x
  2. Step 2: Convert to fraction form
    101,688.21/152,534.34 = 71,579.30/x
  3. Step 3: Cross multiply
    101,688.21x = 152,534.34 × 71,579.30
  4. Step 4: Simplify right side
    101,688.21x = 10,918,300,520.49
  5. Step 5: Solve for x
    x = 10,918,300,520.49/101,688.21
  6. Step 6: Final answer
    x = 107,370.37

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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.