Home / 99,631.81-137,491.75-54,309.88

Finding the Fourth Proportional to 99,631.81, 137,491.75 and 54,309.88

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Solution

The fourth proportional to 99,631.81, 137,491.75 and 54,309.88 is: 74,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,631.81 : 137,491.75 = 54,309.88 : x
  2. Step 2: Convert to fraction form
    99,631.81/137,491.75 = 54,309.88/x
  3. Step 3: Cross multiply
    99,631.81x = 137,491.75 × 54,309.88
  4. Step 4: Simplify right side
    99,631.81x = 7,467,160,167.65
  5. Step 5: Solve for x
    x = 7,467,160,167.65/99,631.81
  6. Step 6: Final answer
    x = 74,947.55

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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.