Home / 138,342.85-190,857.70-84,534.46

Finding the Fourth Proportional to 138,342.85, 190,857.70 and 84,534.46

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Solution

The fourth proportional to 138,342.85, 190,857.70 and 84,534.46 is: 116,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,342.85 : 190,857.70 = 84,534.46 : x
  2. Step 2: Convert to fraction form
    138,342.85/190,857.70 = 84,534.46/x
  3. Step 3: Cross multiply
    138,342.85x = 190,857.70 × 84,534.46
  4. Step 4: Simplify right side
    138,342.85x = 16,134,052,606.34
  5. Step 5: Solve for x
    x = 16,134,052,606.34/138,342.85
  6. Step 6: Final answer
    x = 116,623.68

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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.