Home / 109,428.20-164,142.30-56,940.20

Finding the Fourth Proportional to 109,428.20, 164,142.30 and 56,940.20

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Solution

The fourth proportional to 109,428.20, 164,142.30 and 56,940.20 is: 85,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,428.20 : 164,142.30 = 56,940.20 : x
  2. Step 2: Convert to fraction form
    109,428.20/164,142.30 = 56,940.20/x
  3. Step 3: Cross multiply
    109,428.20x = 164,142.30 × 56,940.20
  4. Step 4: Simplify right side
    109,428.20x = 9,346,295,390.46
  5. Step 5: Solve for x
    x = 9,346,295,390.46/109,428.20
  6. Step 6: Final answer
    x = 85,410.30

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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.