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Finding the Fourth Proportional to 143,636.13, 215,049.15 and 76,014.99

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Solution

The fourth proportional to 143,636.13, 215,049.15 and 76,014.99 is: 113,808.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,636.13 : 215,049.15 = 76,014.99 : x
  2. Step 2: Convert to fraction form
    143,636.13/215,049.15 = 76,014.99/x
  3. Step 3: Cross multiply
    143,636.13x = 215,049.15 × 76,014.99
  4. Step 4: Simplify right side
    143,636.13x = 16,346,958,986.76
  5. Step 5: Solve for x
    x = 16,346,958,986.76/143,636.13
  6. Step 6: Final answer
    x = 113,808.13

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1.5x scale

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.