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Finding the Fourth Proportional to 100,612.84, 138,837.58 and 58,174.10

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Solution

The fourth proportional to 100,612.84, 138,837.58 and 58,174.10 is: 80,275.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,612.84 : 138,837.58 = 58,174.10 : x
  2. Step 2: Convert to fraction form
    100,612.84/138,837.58 = 58,174.10/x
  3. Step 3: Cross multiply
    100,612.84x = 138,837.58 × 58,174.10
  4. Step 4: Simplify right side
    100,612.84x = 8,076,751,262.68
  5. Step 5: Solve for x
    x = 8,076,751,262.68/100,612.84
  6. Step 6: Final answer
    x = 80,275.55

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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.