Home / 99,409.83-137,181.47-54,087.99

Finding the Fourth Proportional to 99,409.83, 137,181.47 and 54,087.99

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Solution

The fourth proportional to 99,409.83, 137,181.47 and 54,087.99 is: 74,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,409.83 : 137,181.47 = 54,087.99 : x
  2. Step 2: Convert to fraction form
    99,409.83/137,181.47 = 54,087.99/x
  3. Step 3: Cross multiply
    99,409.83x = 137,181.47 × 54,087.99
  4. Step 4: Simplify right side
    99,409.83x = 7,419,869,707.11
  5. Step 5: Solve for x
    x = 7,419,869,707.11/99,409.83
  6. Step 6: Final answer
    x = 74,639.20

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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.