Home / 99,918.09-137,885.30-54,595.08

Finding the Fourth Proportional to 99,918.09, 137,885.30 and 54,595.08

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Solution

The fourth proportional to 99,918.09, 137,885.30 and 54,595.08 is: 75,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.09 : 137,885.30 = 54,595.08 : x
  2. Step 2: Convert to fraction form
    99,918.09/137,885.30 = 54,595.08/x
  3. Step 3: Cross multiply
    99,918.09x = 137,885.30 × 54,595.08
  4. Step 4: Simplify right side
    99,918.09x = 7,527,858,711.35
  5. Step 5: Solve for x
    x = 7,527,858,711.35/99,918.09
  6. Step 6: Final answer
    x = 75,340.30

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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.