Home / 181,985.40-272,783.70-82,128.60

Finding the Fourth Proportional to 181,985.40, 272,783.70 and 82,128.60

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Solution

The fourth proportional to 181,985.40, 272,783.70 and 82,128.60 is: 123,105.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,985.40 : 272,783.70 = 82,128.60 : x
  2. Step 2: Convert to fraction form
    181,985.40/272,783.70 = 82,128.60/x
  3. Step 3: Cross multiply
    181,985.40x = 272,783.70 × 82,128.60
  4. Step 4: Simplify right side
    181,985.40x = 22,403,343,383.82
  5. Step 5: Solve for x
    x = 22,403,343,383.82/181,985.40
  6. Step 6: Final answer
    x = 123,105.17

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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.