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Finding the Fourth Proportional to 143,801.56, 215,703.64 and 38,620.48

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Solution

The fourth proportional to 143,801.56, 215,703.64 and 38,620.48 is: 57,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,801.56 : 215,703.64 = 38,620.48 : x
  2. Step 2: Convert to fraction form
    143,801.56/215,703.64 = 38,620.48/x
  3. Step 3: Cross multiply
    143,801.56x = 215,703.64 × 38,620.48
  4. Step 4: Simplify right side
    143,801.56x = 8,330,578,114.55
  5. Step 5: Solve for x
    x = 8,330,578,114.55/143,801.56
  6. Step 6: Final answer
    x = 57,931.07

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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.