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Finding the Fourth Proportional to 109,998.80, 164,803.80 and 103,000.40

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Solution

The fourth proportional to 109,998.80, 164,803.80 and 103,000.40 is: 154,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,998.80 : 164,803.80 = 103,000.40 : x
  2. Step 2: Convert to fraction form
    109,998.80/164,803.80 = 103,000.40/x
  3. Step 3: Cross multiply
    109,998.80x = 164,803.80 × 103,000.40
  4. Step 4: Simplify right side
    109,998.80x = 16,974,857,321.52
  5. Step 5: Solve for x
    x = 16,974,857,321.52/109,998.80
  6. Step 6: Final answer
    x = 154,318.57

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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.