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Finding the Fourth Proportional to 145,978.56, 218,967.36 and 35,170.56

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Solution

The fourth proportional to 145,978.56, 218,967.36 and 35,170.56 is: 52,755.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,978.56 : 218,967.36 = 35,170.56 : x
  2. Step 2: Convert to fraction form
    145,978.56/218,967.36 = 35,170.56/x
  3. Step 3: Cross multiply
    145,978.56x = 218,967.36 × 35,170.56
  4. Step 4: Simplify right side
    145,978.56x = 7,701,204,672.92
  5. Step 5: Solve for x
    x = 7,701,204,672.92/145,978.56
  6. Step 6: Final answer
    x = 52,755.72

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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.