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Finding the Fourth Proportional to 181,686.70, 272,530.14 and 81,730.12

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Solution

The fourth proportional to 181,686.70, 272,530.14 and 81,730.12 is: 122,595.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,686.70 : 272,530.14 = 81,730.12 : x
  2. Step 2: Convert to fraction form
    181,686.70/272,530.14 = 81,730.12/x
  3. Step 3: Cross multiply
    181,686.70x = 272,530.14 × 81,730.12
  4. Step 4: Simplify right side
    181,686.70x = 22,273,921,045.82
  5. Step 5: Solve for x
    x = 22,273,921,045.82/181,686.70
  6. Step 6: Final answer
    x = 122,595.22

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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.