Home / 85,301.40-127,076.65-81,463.22

Finding the Fourth Proportional to 85,301.40, 127,076.65 and 81,463.22

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Solution

The fourth proportional to 85,301.40, 127,076.65 and 81,463.22 is: 121,358.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,301.40 : 127,076.65 = 81,463.22 : x
  2. Step 2: Convert to fraction form
    85,301.40/127,076.65 = 81,463.22/x
  3. Step 3: Cross multiply
    85,301.40x = 127,076.65 × 81,463.22
  4. Step 4: Simplify right side
    85,301.40x = 10,352,072,733.31
  5. Step 5: Solve for x
    x = 10,352,072,733.31/85,301.40
  6. Step 6: Final answer
    x = 121,358.76

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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.