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Finding the Fourth Proportional to 121,408.59, 182,129.55 and 41,425.11

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Solution

The fourth proportional to 121,408.59, 182,129.55 and 41,425.11 is: 62,143.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,408.59 : 182,129.55 = 41,425.11 : x
  2. Step 2: Convert to fraction form
    121,408.59/182,129.55 = 41,425.11/x
  3. Step 3: Cross multiply
    121,408.59x = 182,129.55 × 41,425.11
  4. Step 4: Simplify right side
    121,408.59x = 7,544,736,643.00
  5. Step 5: Solve for x
    x = 7,544,736,643.00/121,408.59
  6. Step 6: Final answer
    x = 62,143.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.