Home / 141,800.56-195,688.96-78,142.44

Finding the Fourth Proportional to 141,800.56, 195,688.96 and 78,142.44

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Solution

The fourth proportional to 141,800.56, 195,688.96 and 78,142.44 is: 107,838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,800.56 : 195,688.96 = 78,142.44 : x
  2. Step 2: Convert to fraction form
    141,800.56/195,688.96 = 78,142.44/x
  3. Step 3: Cross multiply
    141,800.56x = 195,688.96 × 78,142.44
  4. Step 4: Simplify right side
    141,800.56x = 15,291,612,815.46
  5. Step 5: Solve for x
    x = 15,291,612,815.46/141,800.56
  6. Step 6: Final answer
    x = 107,838.87

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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.