Home / 141,805.34-195,682.11-78,143.12

Finding the Fourth Proportional to 141,805.34, 195,682.11 and 78,143.12

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Solution

The fourth proportional to 141,805.34, 195,682.11 and 78,143.12 is: 107,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,805.34 : 195,682.11 = 78,143.12 : x
  2. Step 2: Convert to fraction form
    141,805.34/195,682.11 = 78,143.12/x
  3. Step 3: Cross multiply
    141,805.34x = 195,682.11 × 78,143.12
  4. Step 4: Simplify right side
    141,805.34x = 15,291,209,625.17
  5. Step 5: Solve for x
    x = 15,291,209,625.17/141,805.34
  6. Step 6: Final answer
    x = 107,832.40

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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.