Home / 100,652.09-138,901.59-55,331.96

Finding the Fourth Proportional to 100,652.09, 138,901.59 and 55,331.96

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Solution

The fourth proportional to 100,652.09, 138,901.59 and 55,331.96 is: 76,359.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,652.09 : 138,901.59 = 55,331.96 : x
  2. Step 2: Convert to fraction form
    100,652.09/138,901.59 = 55,331.96/x
  3. Step 3: Cross multiply
    100,652.09x = 138,901.59 × 55,331.96
  4. Step 4: Simplify right side
    100,652.09x = 7,685,696,527.31
  5. Step 5: Solve for x
    x = 7,685,696,527.31/100,652.09
  6. Step 6: Final answer
    x = 76,359.04

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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.