Home / 141,435.52-195,173.76-77,771.68

Finding the Fourth Proportional to 141,435.52, 195,173.76 and 77,771.68

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Solution

The fourth proportional to 141,435.52, 195,173.76 and 77,771.68 is: 107,320.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,435.52 : 195,173.76 = 77,771.68 : x
  2. Step 2: Convert to fraction form
    141,435.52/195,173.76 = 77,771.68/x
  3. Step 3: Cross multiply
    141,435.52x = 195,173.76 × 77,771.68
  4. Step 4: Simplify right side
    141,435.52x = 15,178,991,207.12
  5. Step 5: Solve for x
    x = 15,178,991,207.12/141,435.52
  6. Step 6: Final answer
    x = 107,320.93

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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.