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Finding the Fourth Proportional to 143,117.60, 214,676.40 and 43,293.20

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Solution

The fourth proportional to 143,117.60, 214,676.40 and 43,293.20 is: 64,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,117.60 : 214,676.40 = 43,293.20 : x
  2. Step 2: Convert to fraction form
    143,117.60/214,676.40 = 43,293.20/x
  3. Step 3: Cross multiply
    143,117.60x = 214,676.40 × 43,293.20
  4. Step 4: Simplify right side
    143,117.60x = 9,294,028,320.48
  5. Step 5: Solve for x
    x = 9,294,028,320.48/143,117.60
  6. Step 6: Final answer
    x = 64,939.80

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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.