Home / 100,646.16-138,891.72-55,327.06

Finding the Fourth Proportional to 100,646.16, 138,891.72 and 55,327.06

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Solution

The fourth proportional to 100,646.16, 138,891.72 and 55,327.06 is: 76,351.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,646.16 : 138,891.72 = 55,327.06 : x
  2. Step 2: Convert to fraction form
    100,646.16/138,891.72 = 55,327.06/x
  3. Step 3: Cross multiply
    100,646.16x = 138,891.72 × 55,327.06
  4. Step 4: Simplify right side
    100,646.16x = 7,684,470,665.70
  5. Step 5: Solve for x
    x = 7,684,470,665.70/100,646.16
  6. Step 6: Final answer
    x = 76,351.36

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1.5x scale

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.