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Finding the Fourth Proportional to 181,254.20, 271,881.30 and 139,215.20

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Solution

The fourth proportional to 181,254.20, 271,881.30 and 139,215.20 is: 208,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,254.20 : 271,881.30 = 139,215.20 : x
  2. Step 2: Convert to fraction form
    181,254.20/271,881.30 = 139,215.20/x
  3. Step 3: Cross multiply
    181,254.20x = 271,881.30 × 139,215.20
  4. Step 4: Simplify right side
    181,254.20x = 37,850,009,555.76
  5. Step 5: Solve for x
    x = 37,850,009,555.76/181,254.20
  6. Step 6: Final answer
    x = 208,822.80

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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.