Home / 141,781.37-195,658.29-78,118.61

Finding the Fourth Proportional to 141,781.37, 195,658.29 and 78,118.61

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Solution

The fourth proportional to 141,781.37, 195,658.29 and 78,118.61 is: 107,803.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,781.37 : 195,658.29 = 78,118.61 : x
  2. Step 2: Convert to fraction form
    141,781.37/195,658.29 = 78,118.61/x
  3. Step 3: Cross multiply
    141,781.37x = 195,658.29 × 78,118.61
  4. Step 4: Simplify right side
    141,781.37x = 15,284,552,671.49
  5. Step 5: Solve for x
    x = 15,284,552,671.49/141,781.37
  6. Step 6: Final answer
    x = 107,803.68

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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.