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Finding the Fourth Proportional to 143,384.64, 214,936.80 and 64,518.72

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Solution

The fourth proportional to 143,384.64, 214,936.80 and 64,518.72 is: 96,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,384.64 : 214,936.80 = 64,518.72 : x
  2. Step 2: Convert to fraction form
    143,384.64/214,936.80 = 64,518.72/x
  3. Step 3: Cross multiply
    143,384.64x = 214,936.80 × 64,518.72
  4. Step 4: Simplify right side
    143,384.64x = 13,867,447,216.90
  5. Step 5: Solve for x
    x = 13,867,447,216.90/143,384.64
  6. Step 6: Final answer
    x = 96,715.01

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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.