Home / 120,216.03-165,900.60-72,459.24

Finding the Fourth Proportional to 120,216.03, 165,900.60 and 72,459.24

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Solution

The fourth proportional to 120,216.03, 165,900.60 and 72,459.24 is: 99,995.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,216.03 : 165,900.60 = 72,459.24 : x
  2. Step 2: Convert to fraction form
    120,216.03/165,900.60 = 72,459.24/x
  3. Step 3: Cross multiply
    120,216.03x = 165,900.60 × 72,459.24
  4. Step 4: Simplify right side
    120,216.03x = 12,021,031,391.54
  5. Step 5: Solve for x
    x = 12,021,031,391.54/120,216.03
  6. Step 6: Final answer
    x = 99,995.25

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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.