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Finding the Fourth Proportional to 136,014.76, 203,989.74 and 57,130.48

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Solution

The fourth proportional to 136,014.76, 203,989.74 and 57,130.48 is: 85,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,014.76 : 203,989.74 = 57,130.48 : x
  2. Step 2: Convert to fraction form
    136,014.76/203,989.74 = 57,130.48/x
  3. Step 3: Cross multiply
    136,014.76x = 203,989.74 × 57,130.48
  4. Step 4: Simplify right side
    136,014.76x = 11,654,031,761.28
  5. Step 5: Solve for x
    x = 11,654,031,761.28/136,014.76
  6. Step 6: Final answer
    x = 85,682.11

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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.