Home / 109,616.30-164,424.45-76,438.70

Finding the Fourth Proportional to 109,616.30, 164,424.45 and 76,438.70

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Solution

The fourth proportional to 109,616.30, 164,424.45 and 76,438.70 is: 114,658.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,616.30 : 164,424.45 = 76,438.70 : x
  2. Step 2: Convert to fraction form
    109,616.30/164,424.45 = 76,438.70/x
  3. Step 3: Cross multiply
    109,616.30x = 164,424.45 × 76,438.70
  4. Step 4: Simplify right side
    109,616.30x = 12,568,391,206.22
  5. Step 5: Solve for x
    x = 12,568,391,206.22/109,616.30
  6. Step 6: Final answer
    x = 114,658.05

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1.5x scale

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.