Home / 109,944.30-164,916.45-81,950.70

Finding the Fourth Proportional to 109,944.30, 164,916.45 and 81,950.70

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Solution

The fourth proportional to 109,944.30, 164,916.45 and 81,950.70 is: 122,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,944.30 : 164,916.45 = 81,950.70 : x
  2. Step 2: Convert to fraction form
    109,944.30/164,916.45 = 81,950.70/x
  3. Step 3: Cross multiply
    109,944.30x = 164,916.45 × 81,950.70
  4. Step 4: Simplify right side
    109,944.30x = 13,515,018,519.02
  5. Step 5: Solve for x
    x = 13,515,018,519.02/109,944.30
  6. Step 6: Final answer
    x = 122,926.05

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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.