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Finding the Fourth Proportional to 121,419.60, 182,129.40 and 114,032.40

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Solution

The fourth proportional to 121,419.60, 182,129.40 and 114,032.40 is: 171,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,419.60 : 182,129.40 = 114,032.40 : x
  2. Step 2: Convert to fraction form
    121,419.60/182,129.40 = 114,032.40/x
  3. Step 3: Cross multiply
    121,419.60x = 182,129.40 × 114,032.40
  4. Step 4: Simplify right side
    121,419.60x = 20,768,652,592.56
  5. Step 5: Solve for x
    x = 20,768,652,592.56/121,419.60
  6. Step 6: Final answer
    x = 171,048.60

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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.