Home / 109,719.20-164,349.15-70,074.56

Finding the Fourth Proportional to 109,719.20, 164,349.15 and 70,074.56

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Solution

The fourth proportional to 109,719.20, 164,349.15 and 70,074.56 is: 104,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,719.20 : 164,349.15 = 70,074.56 : x
  2. Step 2: Convert to fraction form
    109,719.20/164,349.15 = 70,074.56/x
  3. Step 3: Cross multiply
    109,719.20x = 164,349.15 × 70,074.56
  4. Step 4: Simplify right side
    109,719.20x = 11,516,693,550.88
  5. Step 5: Solve for x
    x = 11,516,693,550.88/109,719.20
  6. Step 6: Final answer
    x = 104,965.17

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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.