Home / 211,145.90-316,533.21-109,730.43

Finding the Fourth Proportional to 211,145.90, 316,533.21 and 109,730.43

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Solution

The fourth proportional to 211,145.90, 316,533.21 and 109,730.43 is: 164,499.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.90 : 316,533.21 = 109,730.43 : x
  2. Step 2: Convert to fraction form
    211,145.90/316,533.21 = 109,730.43/x
  3. Step 3: Cross multiply
    211,145.90x = 316,533.21 × 109,730.43
  4. Step 4: Simplify right side
    211,145.90x = 34,733,324,831.09
  5. Step 5: Solve for x
    x = 34,733,324,831.09/211,145.90
  6. Step 6: Final answer
    x = 164,499.17

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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.