Home / 141,780.42-195,657.66-78,118.07

Finding the Fourth Proportional to 141,780.42, 195,657.66 and 78,118.07

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Solution

The fourth proportional to 141,780.42, 195,657.66 and 78,118.07 is: 107,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,780.42 : 195,657.66 = 78,118.07 : x
  2. Step 2: Convert to fraction form
    141,780.42/195,657.66 = 78,118.07/x
  3. Step 3: Cross multiply
    141,780.42x = 195,657.66 × 78,118.07
  4. Step 4: Simplify right side
    141,780.42x = 15,284,397,801.63
  5. Step 5: Solve for x
    x = 15,284,397,801.63/141,780.42
  6. Step 6: Final answer
    x = 107,803.30

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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.