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Finding the Fourth Proportional to 99,396.96, 137,167.70 and 54,074.80

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Solution

The fourth proportional to 99,396.96, 137,167.70 and 54,074.80 is: 74,623.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,396.96 : 137,167.70 = 54,074.80 : x
  2. Step 2: Convert to fraction form
    99,396.96/137,167.70 = 54,074.80/x
  3. Step 3: Cross multiply
    99,396.96x = 137,167.70 × 54,074.80
  4. Step 4: Simplify right side
    99,396.96x = 7,417,315,943.96
  5. Step 5: Solve for x
    x = 7,417,315,943.96/99,396.96
  6. Step 6: Final answer
    x = 74,623.17

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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.