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Finding the Fourth Proportional to 99,666.84, 137,539.74 and 54,954.84

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Solution

The fourth proportional to 99,666.84, 137,539.74 and 54,954.84 is: 75,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,666.84 : 137,539.74 = 54,954.84 : x
  2. Step 2: Convert to fraction form
    99,666.84/137,539.74 = 54,954.84/x
  3. Step 3: Cross multiply
    99,666.84x = 137,539.74 × 54,954.84
  4. Step 4: Simplify right side
    99,666.84x = 7,558,474,405.34
  5. Step 5: Solve for x
    x = 7,558,474,405.34/99,666.84
  6. Step 6: Final answer
    x = 75,837.40

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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.