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Finding the Fourth Proportional to 100,173.93, 138,233.91 and 54,852.45

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Solution

The fourth proportional to 100,173.93, 138,233.91 and 54,852.45 is: 75,693.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,173.93 : 138,233.91 = 54,852.45 : x
  2. Step 2: Convert to fraction form
    100,173.93/138,233.91 = 54,852.45/x
  3. Step 3: Cross multiply
    100,173.93x = 138,233.91 × 54,852.45
  4. Step 4: Simplify right side
    100,173.93x = 7,582,468,636.58
  5. Step 5: Solve for x
    x = 7,582,468,636.58/100,173.93
  6. Step 6: Final answer
    x = 75,693.03

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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.