Home / 100,686.96-139,001.40-62,973.36

Finding the Fourth Proportional to 100,686.96, 139,001.40 and 62,973.36

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Solution

The fourth proportional to 100,686.96, 139,001.40 and 62,973.36 is: 86,936.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,686.96 : 139,001.40 = 62,973.36 : x
  2. Step 2: Convert to fraction form
    100,686.96/139,001.40 = 62,973.36/x
  3. Step 3: Cross multiply
    100,686.96x = 139,001.40 × 62,973.36
  4. Step 4: Simplify right side
    100,686.96x = 8,753,385,202.70
  5. Step 5: Solve for x
    x = 8,753,385,202.70/100,686.96
  6. Step 6: Final answer
    x = 86,936.63

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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.