Home / 136,991.64-189,047.79-76,562.22

Finding the Fourth Proportional to 136,991.64, 189,047.79 and 76,562.22

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Solution

The fourth proportional to 136,991.64, 189,047.79 and 76,562.22 is: 105,655.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,991.64 : 189,047.79 = 76,562.22 : x
  2. Step 2: Convert to fraction form
    136,991.64/189,047.79 = 76,562.22/x
  3. Step 3: Cross multiply
    136,991.64x = 189,047.79 × 76,562.22
  4. Step 4: Simplify right side
    136,991.64x = 14,473,918,488.49
  5. Step 5: Solve for x
    x = 14,473,918,488.49/136,991.64
  6. Step 6: Final answer
    x = 105,655.49

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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.