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Finding the Fourth Proportional to 102,979, 154,477.50 and 29,107

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Solution

The fourth proportional to 102,979, 154,477.50 and 29,107 is: 43,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979 : 154,477.50 = 29,107 : x
  2. Step 2: Convert to fraction form
    102,979/154,477.50 = 29,107/x
  3. Step 3: Cross multiply
    102,979x = 154,477.50 × 29,107
  4. Step 4: Simplify right side
    102,979x = 4,496,376,592.50
  5. Step 5: Solve for x
    x = 4,496,376,592.50/102,979
  6. Step 6: Final answer
    x = 43,663.04

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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.