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Finding the Fourth Proportional to 134,820.70, 202,231.05 and 72,612.70

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Solution

The fourth proportional to 134,820.70, 202,231.05 and 72,612.70 is: 108,919.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,820.70 : 202,231.05 = 72,612.70 : x
  2. Step 2: Convert to fraction form
    134,820.70/202,231.05 = 72,612.70/x
  3. Step 3: Cross multiply
    134,820.70x = 202,231.05 × 72,612.70
  4. Step 4: Simplify right side
    134,820.70x = 14,684,542,564.34
  5. Step 5: Solve for x
    x = 14,684,542,564.34/134,820.70
  6. Step 6: Final answer
    x = 108,919.05

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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.