Home / 189,630.40-284,575.20-137,084.80

Finding the Fourth Proportional to 189,630.40, 284,575.20 and 137,084.80

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Solution

The fourth proportional to 189,630.40, 284,575.20 and 137,084.80 is: 205,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,630.40 : 284,575.20 = 137,084.80 : x
  2. Step 2: Convert to fraction form
    189,630.40/284,575.20 = 137,084.80/x
  3. Step 3: Cross multiply
    189,630.40x = 284,575.20 × 137,084.80
  4. Step 4: Simplify right side
    189,630.40x = 39,010,934,376.96
  5. Step 5: Solve for x
    x = 39,010,934,376.96/189,630.40
  6. Step 6: Final answer
    x = 205,720.89

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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.