Home / 99,331.11-137,133.41-79,123.23

Finding the Fourth Proportional to 99,331.11, 137,133.41 and 79,123.23

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Solution

The fourth proportional to 99,331.11, 137,133.41 and 79,123.23 is: 109,235.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,331.11 : 137,133.41 = 79,123.23 : x
  2. Step 2: Convert to fraction form
    99,331.11/137,133.41 = 79,123.23/x
  3. Step 3: Cross multiply
    99,331.11x = 137,133.41 × 79,123.23
  4. Step 4: Simplify right side
    99,331.11x = 10,850,437,944.50
  5. Step 5: Solve for x
    x = 10,850,437,944.50/99,331.11
  6. Step 6: Final answer
    x = 109,235.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.