Home / 109,869.10-164,803.65-92,761.90

Finding the Fourth Proportional to 109,869.10, 164,803.65 and 92,761.90

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Solution

The fourth proportional to 109,869.10, 164,803.65 and 92,761.90 is: 139,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,869.10 : 164,803.65 = 92,761.90 : x
  2. Step 2: Convert to fraction form
    109,869.10/164,803.65 = 92,761.90/x
  3. Step 3: Cross multiply
    109,869.10x = 164,803.65 × 92,761.90
  4. Step 4: Simplify right side
    109,869.10x = 15,287,499,700.94
  5. Step 5: Solve for x
    x = 15,287,499,700.94/109,869.10
  6. Step 6: Final answer
    x = 139,142.85

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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.