Home / 141,780.62-195,657.26-78,117.86

Finding the Fourth Proportional to 141,780.62, 195,657.26 and 78,117.86

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Solution

The fourth proportional to 141,780.62, 195,657.26 and 78,117.86 is: 107,802.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,780.62 : 195,657.26 = 78,117.86 : x
  2. Step 2: Convert to fraction form
    141,780.62/195,657.26 = 78,117.86/x
  3. Step 3: Cross multiply
    141,780.62x = 195,657.26 × 78,117.86
  4. Step 4: Simplify right side
    141,780.62x = 15,284,325,075.79
  5. Step 5: Solve for x
    x = 15,284,325,075.79/141,780.62
  6. Step 6: Final answer
    x = 107,802.64

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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.