Home / 99,955.09-137,939.98-54,631.81

Finding the Fourth Proportional to 99,955.09, 137,939.98 and 54,631.81

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Solution

The fourth proportional to 99,955.09, 137,939.98 and 54,631.81 is: 75,392.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,955.09 : 137,939.98 = 54,631.81 : x
  2. Step 2: Convert to fraction form
    99,955.09/137,939.98 = 54,631.81/x
  3. Step 3: Cross multiply
    99,955.09x = 137,939.98 × 54,631.81
  4. Step 4: Simplify right side
    99,955.09x = 7,535,910,089.06
  5. Step 5: Solve for x
    x = 7,535,910,089.06/99,955.09
  6. Step 6: Final answer
    x = 75,392.96

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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.