Home / 82,366.56-123,314.40-77,135.16

Finding the Fourth Proportional to 82,366.56, 123,314.40 and 77,135.16

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Solution

The fourth proportional to 82,366.56, 123,314.40 and 77,135.16 is: 115,482.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,366.56 : 123,314.40 = 77,135.16 : x
  2. Step 2: Convert to fraction form
    82,366.56/123,314.40 = 77,135.16/x
  3. Step 3: Cross multiply
    82,366.56x = 123,314.40 × 77,135.16
  4. Step 4: Simplify right side
    82,366.56x = 9,511,875,974.30
  5. Step 5: Solve for x
    x = 9,511,875,974.30/82,366.56
  6. Step 6: Final answer
    x = 115,482.25

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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.