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Finding the Fourth Proportional to 172,678.53, 238,313.43 and 101,054.28

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Solution

The fourth proportional to 172,678.53, 238,313.43 and 101,054.28 is: 139,464.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,678.53 : 238,313.43 = 101,054.28 : x
  2. Step 2: Convert to fraction form
    172,678.53/238,313.43 = 101,054.28/x
  3. Step 3: Cross multiply
    172,678.53x = 238,313.43 × 101,054.28
  4. Step 4: Simplify right side
    172,678.53x = 24,082,592,082.98
  5. Step 5: Solve for x
    x = 24,082,592,082.98/172,678.53
  6. Step 6: Final answer
    x = 139,464.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.