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Finding the Fourth Proportional to 100,338.45, 138,447.54 and 59,495.01

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Solution

The fourth proportional to 100,338.45, 138,447.54 and 59,495.01 is: 82,091.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,338.45 : 138,447.54 = 59,495.01 : x
  2. Step 2: Convert to fraction form
    100,338.45/138,447.54 = 59,495.01/x
  3. Step 3: Cross multiply
    100,338.45x = 138,447.54 × 59,495.01
  4. Step 4: Simplify right side
    100,338.45x = 8,236,937,776.78
  5. Step 5: Solve for x
    x = 8,236,937,776.78/100,338.45
  6. Step 6: Final answer
    x = 82,091.54

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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.