Home / 98,154.99-135,438.03-55,132.43

Finding the Fourth Proportional to 98,154.99, 135,438.03 and 55,132.43

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Solution

The fourth proportional to 98,154.99, 135,438.03 and 55,132.43 is: 76,073.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,154.99 : 135,438.03 = 55,132.43 : x
  2. Step 2: Convert to fraction form
    98,154.99/135,438.03 = 55,132.43/x
  3. Step 3: Cross multiply
    98,154.99x = 135,438.03 × 55,132.43
  4. Step 4: Simplify right side
    98,154.99x = 7,467,027,031.12
  5. Step 5: Solve for x
    x = 7,467,027,031.12/98,154.99
  6. Step 6: Final answer
    x = 76,073.84

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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.