Home / 109,340.20-164,010.30-72,015.40

Finding the Fourth Proportional to 109,340.20, 164,010.30 and 72,015.40

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Solution

The fourth proportional to 109,340.20, 164,010.30 and 72,015.40 is: 108,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,340.20 : 164,010.30 = 72,015.40 : x
  2. Step 2: Convert to fraction form
    109,340.20/164,010.30 = 72,015.40/x
  3. Step 3: Cross multiply
    109,340.20x = 164,010.30 × 72,015.40
  4. Step 4: Simplify right side
    109,340.20x = 11,811,267,358.62
  5. Step 5: Solve for x
    x = 11,811,267,358.62/109,340.20
  6. Step 6: Final answer
    x = 108,023.10

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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.