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Finding the Fourth Proportional to 123,482.40, 185,317.32 and 81,348.12

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Solution

The fourth proportional to 123,482.40, 185,317.32 and 81,348.12 is: 122,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,482.40 : 185,317.32 = 81,348.12 : x
  2. Step 2: Convert to fraction form
    123,482.40/185,317.32 = 81,348.12/x
  3. Step 3: Cross multiply
    123,482.40x = 185,317.32 × 81,348.12
  4. Step 4: Simplify right side
    123,482.40x = 15,075,215,585.44
  5. Step 5: Solve for x
    x = 15,075,215,585.44/123,482.40
  6. Step 6: Final answer
    x = 122,083.92

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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.