Home / 90,928.56-136,374.21-57,179.10

Finding the Fourth Proportional to 90,928.56, 136,374.21 and 57,179.10

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Solution

The fourth proportional to 90,928.56, 136,374.21 and 57,179.10 is: 85,756.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,928.56 : 136,374.21 = 57,179.10 : x
  2. Step 2: Convert to fraction form
    90,928.56/136,374.21 = 57,179.10/x
  3. Step 3: Cross multiply
    90,928.56x = 136,374.21 × 57,179.10
  4. Step 4: Simplify right side
    90,928.56x = 7,797,754,591.01
  5. Step 5: Solve for x
    x = 7,797,754,591.01/90,928.56
  6. Step 6: Final answer
    x = 85,756.93

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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.