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Finding the Fourth Proportional to 100,673.32, 138,932.10 and 58,245.16

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Solution

The fourth proportional to 100,673.32, 138,932.10 and 58,245.16 is: 80,380.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,673.32 : 138,932.10 = 58,245.16 : x
  2. Step 2: Convert to fraction form
    100,673.32/138,932.10 = 58,245.16/x
  3. Step 3: Cross multiply
    100,673.32x = 138,932.10 × 58,245.16
  4. Step 4: Simplify right side
    100,673.32x = 8,092,122,393.64
  5. Step 5: Solve for x
    x = 8,092,122,393.64/100,673.32
  6. Step 6: Final answer
    x = 80,380.01

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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.