Home / 181,828.40-272,548.20-81,971.60

Finding the Fourth Proportional to 181,828.40, 272,548.20 and 81,971.60

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Solution

The fourth proportional to 181,828.40, 272,548.20 and 81,971.60 is: 122,869.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,828.40 : 272,548.20 = 81,971.60 : x
  2. Step 2: Convert to fraction form
    181,828.40/272,548.20 = 81,971.60/x
  3. Step 3: Cross multiply
    181,828.40x = 272,548.20 × 81,971.60
  4. Step 4: Simplify right side
    181,828.40x = 22,341,212,031.12
  5. Step 5: Solve for x
    x = 22,341,212,031.12/181,828.40
  6. Step 6: Final answer
    x = 122,869.76

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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.