Home / 141,820.02-195,710.67-78,157.80

Finding the Fourth Proportional to 141,820.02, 195,710.67 and 78,157.80

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Solution

The fourth proportional to 141,820.02, 195,710.67 and 78,157.80 is: 107,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.02 : 195,710.67 = 78,157.80 : x
  2. Step 2: Convert to fraction form
    141,820.02/195,710.67 = 78,157.80/x
  3. Step 3: Cross multiply
    141,820.02x = 195,710.67 × 78,157.80
  4. Step 4: Simplify right side
    141,820.02x = 15,296,315,403.73
  5. Step 5: Solve for x
    x = 15,296,315,403.73/141,820.02
  6. Step 6: Final answer
    x = 107,857.24

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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.