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Finding the Fourth Proportional to 99,551.88, 137,381.54 and 54,839.88

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Solution

The fourth proportional to 99,551.88, 137,381.54 and 54,839.88 is: 75,679.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,551.88 : 137,381.54 = 54,839.88 : x
  2. Step 2: Convert to fraction form
    99,551.88/137,381.54 = 54,839.88/x
  3. Step 3: Cross multiply
    99,551.88x = 137,381.54 × 54,839.88
  4. Step 4: Simplify right side
    99,551.88x = 7,533,986,893.62
  5. Step 5: Solve for x
    x = 7,533,986,893.62/99,551.88
  6. Step 6: Final answer
    x = 75,679.00

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1.5x scale

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.