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Finding the Fourth Proportional to 100,363.22, 138,507.46 and 55,651.22

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Solution

The fourth proportional to 100,363.22, 138,507.46 and 55,651.22 is: 76,802.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,363.22 : 138,507.46 = 55,651.22 : x
  2. Step 2: Convert to fraction form
    100,363.22/138,507.46 = 55,651.22/x
  3. Step 3: Cross multiply
    100,363.22x = 138,507.46 × 55,651.22
  4. Step 4: Simplify right side
    100,363.22x = 7,708,109,128.10
  5. Step 5: Solve for x
    x = 7,708,109,128.10/100,363.22
  6. Step 6: Final answer
    x = 76,802.13

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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.