Home / 141,678.20-195,508.90-78,004.10

Finding the Fourth Proportional to 141,678.20, 195,508.90 and 78,004.10

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Solution

The fourth proportional to 141,678.20, 195,508.90 and 78,004.10 is: 107,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,678.20 : 195,508.90 = 78,004.10 : x
  2. Step 2: Convert to fraction form
    141,678.20/195,508.90 = 78,004.10/x
  3. Step 3: Cross multiply
    141,678.20x = 195,508.90 × 78,004.10
  4. Step 4: Simplify right side
    141,678.20x = 15,250,495,786.49
  5. Step 5: Solve for x
    x = 15,250,495,786.49/141,678.20
  6. Step 6: Final answer
    x = 107,641.80

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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.