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Finding the Fourth Proportional to 181,808.64, 272,669.76 and 81,907.20

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Solution

The fourth proportional to 181,808.64, 272,669.76 and 81,907.20 is: 122,841.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,808.64 : 272,669.76 = 81,907.20 : x
  2. Step 2: Convert to fraction form
    181,808.64/272,669.76 = 81,907.20/x
  3. Step 3: Cross multiply
    181,808.64x = 272,669.76 × 81,907.20
  4. Step 4: Simplify right side
    181,808.64x = 22,333,616,566.27
  5. Step 5: Solve for x
    x = 22,333,616,566.27/181,808.64
  6. Step 6: Final answer
    x = 122,841.34

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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.