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Finding the Fourth Proportional to 141,781.86, 212,610.69 and 75,206.88

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Solution

The fourth proportional to 141,781.86, 212,610.69 and 75,206.88 is: 112,777.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,781.86 : 212,610.69 = 75,206.88 : x
  2. Step 2: Convert to fraction form
    141,781.86/212,610.69 = 75,206.88/x
  3. Step 3: Cross multiply
    141,781.86x = 212,610.69 × 75,206.88
  4. Step 4: Simplify right side
    141,781.86x = 15,989,786,649.55
  5. Step 5: Solve for x
    x = 15,989,786,649.55/141,781.86
  6. Step 6: Final answer
    x = 112,777.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.