Home / 141,905.38-195,828.68-77,378.08

Finding the Fourth Proportional to 141,905.38, 195,828.68 and 77,378.08

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Solution

The fourth proportional to 141,905.38, 195,828.68 and 77,378.08 is: 106,781.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,905.38 : 195,828.68 = 77,378.08 : x
  2. Step 2: Convert to fraction form
    141,905.38/195,828.68 = 77,378.08/x
  3. Step 3: Cross multiply
    141,905.38x = 195,828.68 × 77,378.08
  4. Step 4: Simplify right side
    141,905.38x = 15,152,847,267.33
  5. Step 5: Solve for x
    x = 15,152,847,267.33/141,905.38
  6. Step 6: Final answer
    x = 106,781.34

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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.