Home / 109,845.20-164,767.80-72,423.20

Finding the Fourth Proportional to 109,845.20, 164,767.80 and 72,423.20

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Solution

The fourth proportional to 109,845.20, 164,767.80 and 72,423.20 is: 108,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,845.20 : 164,767.80 = 72,423.20 : x
  2. Step 2: Convert to fraction form
    109,845.20/164,767.80 = 72,423.20/x
  3. Step 3: Cross multiply
    109,845.20x = 164,767.80 × 72,423.20
  4. Step 4: Simplify right side
    109,845.20x = 11,933,011,332.96
  5. Step 5: Solve for x
    x = 11,933,011,332.96/109,845.20
  6. Step 6: Final answer
    x = 108,634.80

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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.