Home / 109,721.40-164,567.51-43,143.65

Finding the Fourth Proportional to 109,721.40, 164,567.51 and 43,143.65

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Solution

The fourth proportional to 109,721.40, 164,567.51 and 43,143.65 is: 64,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,721.40 : 164,567.51 = 43,143.65 : x
  2. Step 2: Convert to fraction form
    109,721.40/164,567.51 = 43,143.65/x
  3. Step 3: Cross multiply
    109,721.40x = 164,567.51 × 43,143.65
  4. Step 4: Simplify right side
    109,721.40x = 7,100,043,052.81
  5. Step 5: Solve for x
    x = 7,100,043,052.81/109,721.40
  6. Step 6: Final answer
    x = 64,709.74

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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.