Home / 138,731.40-208,058.70-55,633.80

Finding the Fourth Proportional to 138,731.40, 208,058.70 and 55,633.80

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Solution

The fourth proportional to 138,731.40, 208,058.70 and 55,633.80 is: 83,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,731.40 : 208,058.70 = 55,633.80 : x
  2. Step 2: Convert to fraction form
    138,731.40/208,058.70 = 55,633.80/x
  3. Step 3: Cross multiply
    138,731.40x = 208,058.70 × 55,633.80
  4. Step 4: Simplify right side
    138,731.40x = 11,575,096,104.06
  5. Step 5: Solve for x
    x = 11,575,096,104.06/138,731.40
  6. Step 6: Final answer
    x = 83,435.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.