Home / 135,977.60-203,966.40-85,895.30

Finding the Fourth Proportional to 135,977.60, 203,966.40 and 85,895.30

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Solution

The fourth proportional to 135,977.60, 203,966.40 and 85,895.30 is: 128,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,977.60 : 203,966.40 = 85,895.30 : x
  2. Step 2: Convert to fraction form
    135,977.60/203,966.40 = 85,895.30/x
  3. Step 3: Cross multiply
    135,977.60x = 203,966.40 × 85,895.30
  4. Step 4: Simplify right side
    135,977.60x = 17,519,755,117.92
  5. Step 5: Solve for x
    x = 17,519,755,117.92/135,977.60
  6. Step 6: Final answer
    x = 128,842.95

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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.