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Finding the Fourth Proportional to 155,121.64, 213,950.82 and 104,802.28

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Solution

The fourth proportional to 155,121.64, 213,950.82 and 104,802.28 is: 144,548.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,121.64 : 213,950.82 = 104,802.28 : x
  2. Step 2: Convert to fraction form
    155,121.64/213,950.82 = 104,802.28/x
  3. Step 3: Cross multiply
    155,121.64x = 213,950.82 × 104,802.28
  4. Step 4: Simplify right side
    155,121.64x = 22,422,533,743.87
  5. Step 5: Solve for x
    x = 22,422,533,743.87/155,121.64
  6. Step 6: Final answer
    x = 144,548.07

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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.