Home / 141,435.76-195,186.36-77,778.40

Finding the Fourth Proportional to 141,435.76, 195,186.36 and 77,778.40

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Solution

The fourth proportional to 141,435.76, 195,186.36 and 77,778.40 is: 107,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,435.76 : 195,186.36 = 77,778.40 : x
  2. Step 2: Convert to fraction form
    141,435.76/195,186.36 = 77,778.40/x
  3. Step 3: Cross multiply
    141,435.76x = 195,186.36 × 77,778.40
  4. Step 4: Simplify right side
    141,435.76x = 15,181,282,782.62
  5. Step 5: Solve for x
    x = 15,181,282,782.62/141,435.76
  6. Step 6: Final answer
    x = 107,336.95

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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.