Home / 84,146.64-125,530.86-81,858.66

Finding the Fourth Proportional to 84,146.64, 125,530.86 and 81,858.66

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Solution

The fourth proportional to 84,146.64, 125,530.86 and 81,858.66 is: 122,117.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,146.64 : 125,530.86 = 81,858.66 : x
  2. Step 2: Convert to fraction form
    84,146.64/125,530.86 = 81,858.66/x
  3. Step 3: Cross multiply
    84,146.64x = 125,530.86 × 81,858.66
  4. Step 4: Simplify right side
    84,146.64x = 10,275,787,988.25
  5. Step 5: Solve for x
    x = 10,275,787,988.25/84,146.64
  6. Step 6: Final answer
    x = 122,117.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.