Home / 109,890.80-164,836.20-56,746.70

Finding the Fourth Proportional to 109,890.80, 164,836.20 and 56,746.70

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Solution

The fourth proportional to 109,890.80, 164,836.20 and 56,746.70 is: 85,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,890.80 : 164,836.20 = 56,746.70 : x
  2. Step 2: Convert to fraction form
    109,890.80/164,836.20 = 56,746.70/x
  3. Step 3: Cross multiply
    109,890.80x = 164,836.20 × 56,746.70
  4. Step 4: Simplify right side
    109,890.80x = 9,353,910,390.54
  5. Step 5: Solve for x
    x = 9,353,910,390.54/109,890.80
  6. Step 6: Final answer
    x = 85,120.05

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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.