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Finding the Fourth Proportional to 169,911.90, 254,637.45 and 120,606.30

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Solution

The fourth proportional to 169,911.90, 254,637.45 and 120,606.30 is: 180,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,911.90 : 254,637.45 = 120,606.30 : x
  2. Step 2: Convert to fraction form
    169,911.90/254,637.45 = 120,606.30/x
  3. Step 3: Cross multiply
    169,911.90x = 254,637.45 × 120,606.30
  4. Step 4: Simplify right side
    169,911.90x = 30,710,880,685.94
  5. Step 5: Solve for x
    x = 30,710,880,685.94/169,911.90
  6. Step 6: Final answer
    x = 180,745.91

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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.