Home / 138,101.34-190,606.06-86,442.41

Finding the Fourth Proportional to 138,101.34, 190,606.06 and 86,442.41

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Solution

The fourth proportional to 138,101.34, 190,606.06 and 86,442.41 is: 119,306.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,101.34 : 190,606.06 = 86,442.41 : x
  2. Step 2: Convert to fraction form
    138,101.34/190,606.06 = 86,442.41/x
  3. Step 3: Cross multiply
    138,101.34x = 190,606.06 × 86,442.41
  4. Step 4: Simplify right side
    138,101.34x = 16,476,446,754.79
  5. Step 5: Solve for x
    x = 16,476,446,754.79/138,101.34
  6. Step 6: Final answer
    x = 119,306.93

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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.