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Finding the Fourth Proportional to 159,475.85, 239,130.71 and 75,213.39

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Solution

The fourth proportional to 159,475.85, 239,130.71 and 75,213.39 is: 112,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,475.85 : 239,130.71 = 75,213.39 : x
  2. Step 2: Convert to fraction form
    159,475.85/239,130.71 = 75,213.39/x
  3. Step 3: Cross multiply
    159,475.85x = 239,130.71 × 75,213.39
  4. Step 4: Simplify right side
    159,475.85x = 17,985,831,352.21
  5. Step 5: Solve for x
    x = 17,985,831,352.21/159,475.85
  6. Step 6: Final answer
    x = 112,780.91

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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.