Home / 100,620.04-138,848.93-55,297.05

Finding the Fourth Proportional to 100,620.04, 138,848.93 and 55,297.05

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Solution

The fourth proportional to 100,620.04, 138,848.93 and 55,297.05 is: 76,306.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,620.04 : 138,848.93 = 55,297.05 : x
  2. Step 2: Convert to fraction form
    100,620.04/138,848.93 = 55,297.05/x
  3. Step 3: Cross multiply
    100,620.04x = 138,848.93 × 55,297.05
  4. Step 4: Simplify right side
    100,620.04x = 7,677,936,224.66
  5. Step 5: Solve for x
    x = 7,677,936,224.66/100,620.04
  6. Step 6: Final answer
    x = 76,306.23

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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.