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Finding the Fourth Proportional to 181,471.31, 272,029.58 and 81,656.63

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Solution

The fourth proportional to 181,471.31, 272,029.58 and 81,656.63 is: 122,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,471.31 : 272,029.58 = 81,656.63 : x
  2. Step 2: Convert to fraction form
    181,471.31/272,029.58 = 81,656.63/x
  3. Step 3: Cross multiply
    181,471.31x = 272,029.58 × 81,656.63
  4. Step 4: Simplify right side
    181,471.31x = 22,213,018,354.83
  5. Step 5: Solve for x
    x = 22,213,018,354.83/181,471.31
  6. Step 6: Final answer
    x = 122,405.12

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1.5x scale

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.