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Finding the Fourth Proportional to 160,657.43, 240,755.29 and 90,388.31

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Solution

The fourth proportional to 160,657.43, 240,755.29 and 90,388.31 is: 135,452.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,657.43 : 240,755.29 = 90,388.31 : x
  2. Step 2: Convert to fraction form
    160,657.43/240,755.29 = 90,388.31/x
  3. Step 3: Cross multiply
    160,657.43x = 240,755.29 × 90,388.31
  4. Step 4: Simplify right side
    160,657.43x = 21,761,462,356.91
  5. Step 5: Solve for x
    x = 21,761,462,356.91/160,657.43
  6. Step 6: Final answer
    x = 135,452.58

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1.5x scale

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.