Home / 142,611.21-196,805.03-78,950.07

Finding the Fourth Proportional to 142,611.21, 196,805.03 and 78,950.07

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Solution

The fourth proportional to 142,611.21, 196,805.03 and 78,950.07 is: 108,951.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,611.21 : 196,805.03 = 78,950.07 : x
  2. Step 2: Convert to fraction form
    142,611.21/196,805.03 = 78,950.07/x
  3. Step 3: Cross multiply
    142,611.21x = 196,805.03 × 78,950.07
  4. Step 4: Simplify right side
    142,611.21x = 15,537,770,500.10
  5. Step 5: Solve for x
    x = 15,537,770,500.10/142,611.21
  6. Step 6: Final answer
    x = 108,951.96

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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.