Home / 141,859.02-195,765.87-78,195.45

Finding the Fourth Proportional to 141,859.02, 195,765.87 and 78,195.45

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Solution

The fourth proportional to 141,859.02, 195,765.87 and 78,195.45 is: 107,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,859.02 : 195,765.87 = 78,195.45 : x
  2. Step 2: Convert to fraction form
    141,859.02/195,765.87 = 78,195.45/x
  3. Step 3: Cross multiply
    141,859.02x = 195,765.87 × 78,195.45
  4. Step 4: Simplify right side
    141,859.02x = 15,308,000,299.29
  5. Step 5: Solve for x
    x = 15,308,000,299.29/141,859.02
  6. Step 6: Final answer
    x = 107,909.95

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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.