Home / 109,817.28-164,908.16-68,526.72

Finding the Fourth Proportional to 109,817.28, 164,908.16 and 68,526.72

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Solution

The fourth proportional to 109,817.28, 164,908.16 and 68,526.72 is: 102,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,817.28 : 164,908.16 = 68,526.72 : x
  2. Step 2: Convert to fraction form
    109,817.28/164,908.16 = 68,526.72/x
  3. Step 3: Cross multiply
    109,817.28x = 164,908.16 × 68,526.72
  4. Step 4: Simplify right side
    109,817.28x = 11,300,615,306.04
  5. Step 5: Solve for x
    x = 11,300,615,306.04/109,817.28
  6. Step 6: Final answer
    x = 102,903.80

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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.