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Finding the Fourth Proportional to 100,362.22, 138,506.08 and 55,650.22

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Solution

The fourth proportional to 100,362.22, 138,506.08 and 55,650.22 is: 76,800.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.22 : 138,506.08 = 55,650.22 : x
  2. Step 2: Convert to fraction form
    100,362.22/138,506.08 = 55,650.22/x
  3. Step 3: Cross multiply
    100,362.22x = 138,506.08 × 55,650.22
  4. Step 4: Simplify right side
    100,362.22x = 7,707,893,823.34
  5. Step 5: Solve for x
    x = 7,707,893,823.34/100,362.22
  6. Step 6: Final answer
    x = 76,800.75

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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.