Home / 109,742.88-164,615.76-72,541.92

Finding the Fourth Proportional to 109,742.88, 164,615.76 and 72,541.92

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Solution

The fourth proportional to 109,742.88, 164,615.76 and 72,541.92 is: 108,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,742.88 : 164,615.76 = 72,541.92 : x
  2. Step 2: Convert to fraction form
    109,742.88/164,615.76 = 72,541.92/x
  3. Step 3: Cross multiply
    109,742.88x = 164,615.76 × 72,541.92
  4. Step 4: Simplify right side
    109,742.88x = 11,941,543,292.66
  5. Step 5: Solve for x
    x = 11,941,543,292.66/109,742.88
  6. Step 6: Final answer
    x = 108,813.83

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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.