Home / 109,972.80-165,002.40-43,401.60

Finding the Fourth Proportional to 109,972.80, 165,002.40 and 43,401.60

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Solution

The fourth proportional to 109,972.80, 165,002.40 and 43,401.60 is: 65,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,972.80 : 165,002.40 = 43,401.60 : x
  2. Step 2: Convert to fraction form
    109,972.80/165,002.40 = 43,401.60/x
  3. Step 3: Cross multiply
    109,972.80x = 165,002.40 × 43,401.60
  4. Step 4: Simplify right side
    109,972.80x = 7,161,368,163.84
  5. Step 5: Solve for x
    x = 7,161,368,163.84/109,972.80
  6. Step 6: Final answer
    x = 65,119.45

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1.5x scale

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.