Home / 109,515.80-164,273.70-99,666.20

Finding the Fourth Proportional to 109,515.80, 164,273.70 and 99,666.20

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Solution

The fourth proportional to 109,515.80, 164,273.70 and 99,666.20 is: 149,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515.80 : 164,273.70 = 99,666.20 : x
  2. Step 2: Convert to fraction form
    109,515.80/164,273.70 = 99,666.20/x
  3. Step 3: Cross multiply
    109,515.80x = 164,273.70 × 99,666.20
  4. Step 4: Simplify right side
    109,515.80x = 16,372,535,438.94
  5. Step 5: Solve for x
    x = 16,372,535,438.94/109,515.80
  6. Step 6: Final answer
    x = 149,499.30

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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.