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Finding the Fourth Proportional to 121,881.60, 182,822.40 and 106,329.60

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Solution

The fourth proportional to 121,881.60, 182,822.40 and 106,329.60 is: 159,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,881.60 : 182,822.40 = 106,329.60 : x
  2. Step 2: Convert to fraction form
    121,881.60/182,822.40 = 106,329.60/x
  3. Step 3: Cross multiply
    121,881.60x = 182,822.40 × 106,329.60
  4. Step 4: Simplify right side
    121,881.60x = 19,439,432,663.04
  5. Step 5: Solve for x
    x = 19,439,432,663.04/121,881.60
  6. Step 6: Final answer
    x = 159,494.40

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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.