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Finding the Fourth Proportional to 150,558.31, 207,770.44 and 83,490.31

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Solution

The fourth proportional to 150,558.31, 207,770.44 and 83,490.31 is: 115,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,558.31 : 207,770.44 = 83,490.31 : x
  2. Step 2: Convert to fraction form
    150,558.31/207,770.44 = 83,490.31/x
  3. Step 3: Cross multiply
    150,558.31x = 207,770.44 × 83,490.31
  4. Step 4: Simplify right side
    150,558.31x = 17,346,818,444.44
  5. Step 5: Solve for x
    x = 17,346,818,444.44/150,558.31
  6. Step 6: Final answer
    x = 115,216.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.