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Finding the Fourth Proportional to 143,214.60, 214,530.30 and 73,133.40

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Solution

The fourth proportional to 143,214.60, 214,530.30 and 73,133.40 is: 109,551.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,214.60 : 214,530.30 = 73,133.40 : x
  2. Step 2: Convert to fraction form
    143,214.60/214,530.30 = 73,133.40/x
  3. Step 3: Cross multiply
    143,214.60x = 214,530.30 × 73,133.40
  4. Step 4: Simplify right side
    143,214.60x = 15,689,330,242.02
  5. Step 5: Solve for x
    x = 15,689,330,242.02/143,214.60
  6. Step 6: Final answer
    x = 109,551.19

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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.