Home / 141,890.49-195,810.20-78,230.56

Finding the Fourth Proportional to 141,890.49, 195,810.20 and 78,230.56

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Solution

The fourth proportional to 141,890.49, 195,810.20 and 78,230.56 is: 107,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,890.49 : 195,810.20 = 78,230.56 : x
  2. Step 2: Convert to fraction form
    141,890.49/195,810.20 = 78,230.56/x
  3. Step 3: Cross multiply
    141,890.49x = 195,810.20 × 78,230.56
  4. Step 4: Simplify right side
    141,890.49x = 15,318,341,599.71
  5. Step 5: Solve for x
    x = 15,318,341,599.71/141,890.49
  6. Step 6: Final answer
    x = 107,958.90

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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.