Home / 189,478.80-284,166.36-71,141.04

Finding the Fourth Proportional to 189,478.80, 284,166.36 and 71,141.04

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Solution

The fourth proportional to 189,478.80, 284,166.36 and 71,141.04 is: 106,692.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,478.80 : 284,166.36 = 71,141.04 : x
  2. Step 2: Convert to fraction form
    189,478.80/284,166.36 = 71,141.04/x
  3. Step 3: Cross multiply
    189,478.80x = 284,166.36 × 71,141.04
  4. Step 4: Simplify right side
    189,478.80x = 20,215,890,383.41
  5. Step 5: Solve for x
    x = 20,215,890,383.41/189,478.80
  6. Step 6: Final answer
    x = 106,692.10

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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.