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Finding the Fourth Proportional to 170,903.66, 256,216.64 and 71,138.52

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Solution

The fourth proportional to 170,903.66, 256,216.64 and 71,138.52 is: 106,649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,903.66 : 256,216.64 = 71,138.52 : x
  2. Step 2: Convert to fraction form
    170,903.66/256,216.64 = 71,138.52/x
  3. Step 3: Cross multiply
    170,903.66x = 256,216.64 × 71,138.52
  4. Step 4: Simplify right side
    170,903.66x = 18,226,872,213.28
  5. Step 5: Solve for x
    x = 18,226,872,213.28/170,903.66
  6. Step 6: Final answer
    x = 106,649.98

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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.