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Finding the Fourth Proportional to 183,421.60, 275,132.40 and 126,340.90

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Solution

The fourth proportional to 183,421.60, 275,132.40 and 126,340.90 is: 189,511.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,421.60 : 275,132.40 = 126,340.90 : x
  2. Step 2: Convert to fraction form
    183,421.60/275,132.40 = 126,340.90/x
  3. Step 3: Cross multiply
    183,421.60x = 275,132.40 × 126,340.90
  4. Step 4: Simplify right side
    183,421.60x = 34,760,475,035.16
  5. Step 5: Solve for x
    x = 34,760,475,035.16/183,421.60
  6. Step 6: Final answer
    x = 189,511.35

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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.