Home / 156,100.77-215,419.02-84,480.78

Finding the Fourth Proportional to 156,100.77, 215,419.02 and 84,480.78

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Solution

The fourth proportional to 156,100.77, 215,419.02 and 84,480.78 is: 116,583.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,100.77 : 215,419.02 = 84,480.78 : x
  2. Step 2: Convert to fraction form
    156,100.77/215,419.02 = 84,480.78/x
  3. Step 3: Cross multiply
    156,100.77x = 215,419.02 × 84,480.78
  4. Step 4: Simplify right side
    156,100.77x = 18,198,766,836.44
  5. Step 5: Solve for x
    x = 18,198,766,836.44/156,100.77
  6. Step 6: Final answer
    x = 116,583.45

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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.