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Finding the Fourth Proportional to 99,478.66, 149,218 and 95,159.34

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Solution

The fourth proportional to 99,478.66, 149,218 and 95,159.34 is: 142,739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,478.66 : 149,218 = 95,159.34 : x
  2. Step 2: Convert to fraction form
    99,478.66/149,218 = 95,159.34/x
  3. Step 3: Cross multiply
    99,478.66x = 149,218 × 95,159.34
  4. Step 4: Simplify right side
    99,478.66x = 14,199,486,396.12
  5. Step 5: Solve for x
    x = 14,199,486,396.12/99,478.66
  6. Step 6: Final answer
    x = 142,739.02

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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.