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Finding the Fourth Proportional to 158,963.62, 219,369.17 and 90,980.32

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Solution

The fourth proportional to 158,963.62, 219,369.17 and 90,980.32 is: 125,552.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,963.62 : 219,369.17 = 90,980.32 : x
  2. Step 2: Convert to fraction form
    158,963.62/219,369.17 = 90,980.32/x
  3. Step 3: Cross multiply
    158,963.62x = 219,369.17 × 90,980.32
  4. Step 4: Simplify right side
    158,963.62x = 19,958,275,732.99
  5. Step 5: Solve for x
    x = 19,958,275,732.99/158,963.62
  6. Step 6: Final answer
    x = 125,552.48

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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.