Home / 99,630.87-137,488.83-54,309.26

Finding the Fourth Proportional to 99,630.87, 137,488.83 and 54,309.26

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Solution

The fourth proportional to 99,630.87, 137,488.83 and 54,309.26 is: 74,945.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,630.87 : 137,488.83 = 54,309.26 : x
  2. Step 2: Convert to fraction form
    99,630.87/137,488.83 = 54,309.26/x
  3. Step 3: Cross multiply
    99,630.87x = 137,488.83 × 54,309.26
  4. Step 4: Simplify right side
    99,630.87x = 7,466,915,928.12
  5. Step 5: Solve for x
    x = 7,466,915,928.12/99,630.87
  6. Step 6: Final answer
    x = 74,945.81

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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.