Home / 279,890.58-419,715.93-130,115.25

Finding the Fourth Proportional to 279,890.58, 419,715.93 and 130,115.25

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Solution

The fourth proportional to 279,890.58, 419,715.93 and 130,115.25 is: 195,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,890.58 : 419,715.93 = 130,115.25 : x
  2. Step 2: Convert to fraction form
    279,890.58/419,715.93 = 130,115.25/x
  3. Step 3: Cross multiply
    279,890.58x = 419,715.93 × 130,115.25
  4. Step 4: Simplify right side
    279,890.58x = 54,611,443,160.93
  5. Step 5: Solve for x
    x = 54,611,443,160.93/279,890.58
  6. Step 6: Final answer
    x = 195,117.12

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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.