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Finding the Fourth Proportional to 172,582.57, 258,891.53 and 66,056.03

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Solution

The fourth proportional to 172,582.57, 258,891.53 and 66,056.03 is: 99,090.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,582.57 : 258,891.53 = 66,056.03 : x
  2. Step 2: Convert to fraction form
    172,582.57/258,891.53 = 66,056.03/x
  3. Step 3: Cross multiply
    172,582.57x = 258,891.53 × 66,056.03
  4. Step 4: Simplify right side
    172,582.57x = 17,101,346,018.53
  5. Step 5: Solve for x
    x = 17,101,346,018.53/172,582.57
  6. Step 6: Final answer
    x = 99,090.81

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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.