Home / 136,970.26-189,040.65-83,272.10

Finding the Fourth Proportional to 136,970.26, 189,040.65 and 83,272.10

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Solution

The fourth proportional to 136,970.26, 189,040.65 and 83,272.10 is: 114,928.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,970.26 : 189,040.65 = 83,272.10 : x
  2. Step 2: Convert to fraction form
    136,970.26/189,040.65 = 83,272.10/x
  3. Step 3: Cross multiply
    136,970.26x = 189,040.65 × 83,272.10
  4. Step 4: Simplify right side
    136,970.26x = 15,741,811,910.87
  5. Step 5: Solve for x
    x = 15,741,811,910.87/136,970.26
  6. Step 6: Final answer
    x = 114,928.69

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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.