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Finding the Fourth Proportional to 102,991.91, 154,363.10 and 43,703.03

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Solution

The fourth proportional to 102,991.91, 154,363.10 and 43,703.03 is: 65,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,991.91 : 154,363.10 = 43,703.03 : x
  2. Step 2: Convert to fraction form
    102,991.91/154,363.10 = 43,703.03/x
  3. Step 3: Cross multiply
    102,991.91x = 154,363.10 × 43,703.03
  4. Step 4: Simplify right side
    102,991.91x = 6,746,134,735.12
  5. Step 5: Solve for x
    x = 6,746,134,735.12/102,991.91
  6. Step 6: Final answer
    x = 65,501.60

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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.