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Finding the Fourth Proportional to 143,457.84, 215,184.87 and 64,516.32

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Solution

The fourth proportional to 143,457.84, 215,184.87 and 64,516.32 is: 96,773.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,457.84 : 215,184.87 = 64,516.32 : x
  2. Step 2: Convert to fraction form
    143,457.84/215,184.87 = 64,516.32/x
  3. Step 3: Cross multiply
    143,457.84x = 215,184.87 × 64,516.32
  4. Step 4: Simplify right side
    143,457.84x = 13,882,935,932.08
  5. Step 5: Solve for x
    x = 13,882,935,932.08/143,457.84
  6. Step 6: Final answer
    x = 96,773.63

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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.