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Finding the Fourth Proportional to 125,656.56, 173,415.96 and 71,958.48

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Solution

The fourth proportional to 125,656.56, 173,415.96 and 71,958.48 is: 99,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,656.56 : 173,415.96 = 71,958.48 : x
  2. Step 2: Convert to fraction form
    125,656.56/173,415.96 = 71,958.48/x
  3. Step 3: Cross multiply
    125,656.56x = 173,415.96 × 71,958.48
  4. Step 4: Simplify right side
    125,656.56x = 12,478,748,889.34
  5. Step 5: Solve for x
    x = 12,478,748,889.34/125,656.56
  6. Step 6: Final answer
    x = 99,308.38

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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.