Home / 100,503.24-138,694.72-55,184.16

Finding the Fourth Proportional to 100,503.24, 138,694.72 and 55,184.16

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Solution

The fourth proportional to 100,503.24, 138,694.72 and 55,184.16 is: 76,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,503.24 : 138,694.72 = 55,184.16 : x
  2. Step 2: Convert to fraction form
    100,503.24/138,694.72 = 55,184.16/x
  3. Step 3: Cross multiply
    100,503.24x = 138,694.72 × 55,184.16
  4. Step 4: Simplify right side
    100,503.24x = 7,653,751,637.57
  5. Step 5: Solve for x
    x = 7,653,751,637.57/100,503.24
  6. Step 6: Final answer
    x = 76,154.28

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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.