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Finding the Fourth Proportional to 143,800.41, 215,728.29 and 64,914.66

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Solution

The fourth proportional to 143,800.41, 215,728.29 and 64,914.66 is: 97,384.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,800.41 : 215,728.29 = 64,914.66 : x
  2. Step 2: Convert to fraction form
    143,800.41/215,728.29 = 64,914.66/x
  3. Step 3: Cross multiply
    143,800.41x = 215,728.29 × 64,914.66
  4. Step 4: Simplify right side
    143,800.41x = 14,003,928,597.73
  5. Step 5: Solve for x
    x = 14,003,928,597.73/143,800.41
  6. Step 6: Final answer
    x = 97,384.48

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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.