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Finding the Fourth Proportional to 100,003.96, 138,017.64 and 57,561.60

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Solution

The fourth proportional to 100,003.96, 138,017.64 and 57,561.60 is: 79,442.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,003.96 : 138,017.64 = 57,561.60 : x
  2. Step 2: Convert to fraction form
    100,003.96/138,017.64 = 57,561.60/x
  3. Step 3: Cross multiply
    100,003.96x = 138,017.64 × 57,561.60
  4. Step 4: Simplify right side
    100,003.96x = 7,944,516,186.62
  5. Step 5: Solve for x
    x = 7,944,516,186.62/100,003.96
  6. Step 6: Final answer
    x = 79,442.02

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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.